Netværk
Jeanne Duus Johansen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Mette Aadahl
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Anders Juul
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Ulla Marie Nørgaard Toft
- Institut for Folkesundhedsvidenskab, https://www.ifsv.ku.dk/om-instituttet/socialmedicin/ - Klinisk professor, Klinisk Professor
Person: VIP
Peter Schwarz
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Børge Nordestgaard
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Niels Erik Skakkebæk
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Adjungeret professor
Person: VIP
Michael Larsen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk professor, Klinisk Professor
Person: VIP
Claus Zachariae
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk lektor
Person: VIP
Sten Madsbad
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Katharina Maria Main
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Ove Andersen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Berit Heitmann
- Institut for Folkesundhedsvidenskab, Afdeling for Almen Medicin - Klinisk Professor
Person: VIP
Klaus Bønnelykke
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Anne Tybjærg-Hansen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk professor, Klinisk Professor
Person: VIP
Peter Riis Hansen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Lars Tue Sørensen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk lektor
Person: VIP
Flemming Pociot
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Thomas Werge
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Lars Thorbjørn Jensen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Postgraduat klinisk lektor
Person: VIP
Marianne Benn
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Ruth Frikke-Schmidt
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Gunnar Hilmar Gislason
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Kim F. Michaelsen
- Institut for Idræt og Ernæring, Ernæring og Sundhed hos børn og voksne - Professor emeritus
Person: VIP
Peter Rossing
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Christian Tobias Torp-Pedersen
- Institut for Folkesundhedsvidenskab, Biostatistisk afdeling - Klinisk Professor
Person: VIP
Susanne Krüger Kjær
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Nils Jakob Knudsen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk lektor
Person: VIP
Tine Houmann
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk undervisningslektor
Person: VIP
Niklas Rye Jørgensen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Jannet Svensson
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk lektor
Person: VIP
Bendix Carstensen
- Institut for Folkesundhedsvidenskab, Biostatistisk afdeling - Ekstern lektor
Person: VIP
Lars K. Poulsen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Professor emeritus
Person: VIP
Jens-Christian Holm
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk forskningslektor
Person: VIP
Charlotte Suppli Ulrik
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Lars Ovesen
- Institut for Idræt og Ernæring, Institut for Idræt og Ernæring - Ekstern lektor
Person: VIP
Peter Jensen
- Institut for Idræt og Ernæring, Institut for Idræt og Ernæring - Undervisningsassistent
Person: VIP
Pia Jeppesen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Line Kessel
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk forskningslektor
Person: VIP
Henrik Bo Wiberg Larsson
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Kirsten Holm
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Postgraduat klinisk lektor
Person: VIP
Susanne Rosthøj
- Institut for Folkesundhedsvidenskab, Biostatistisk afdeling - Gæsteforsker
Person: VIP
Bente Klarlund Pedersen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Drude Molbo
- Institut for Folkesundhedsvidenskab, https://www.ifsv.ku.dk/om-instituttet/socialmedicin/ - Akademisk medarbejder FU
Person: TAP
Steen Bendix Haugaard
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Anders Fink-Jensen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Henrik Enghusen Poulsen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Professor emeritus
Person: VIP
Bo Lund Krogsgaard Chawes
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Carsten Haagen Nielsen
- Biomedicinsk Institut, Cluster for Molecular Imaging - Gæsteforsker
Person: VIP
Gregor Jemec
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Gunhild Waldemar
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Claus Kim Høgdall
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Michael Orland Gamborg
- Institut for Folkesundhedsvidenskab, Biostatistisk afdeling - Ekstern lektor
Person: VIP
Anette Tønnes Pedersen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk lektor
- Institut for Folkesundhedsvidenskab, Afdeling for Almen Medicin - Undervisningsassistent
Person: VIP
Hanne Elberling
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk lektor
Person: VIP
Birte Yding Glenthøj
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Professor Emerita
Person: VIP
Eva Prescott
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Jesper Johannesen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk Professor
Person: VIP
Annette Korsholm Mouritsen
- Institut for Klinisk Medicin, Institut for Klinisk Medicin - Klinisk lektor
Person: VIP
Veikko Salomaa
- National Institute for Health and Welfare
- Department of General Practice and Primary Health Care, University of Helsinki
Ekstern person
Yingchang Lu
- Icahn School of Medicine at Mount Sinai
- Charles Bronfman Institute for Personalized Medicine
- Vanderbilt University
Ekstern person
L Frølund
Ekstern person
Henry Völzke
- University Medicine Greifswald
- University of Greifswald
- Boston University
- German Centre for Cardiovascular Research
Ekstern person
Claudia Langenberg
- University of Cambridge
- University of Cambridge School of Clinical Medicine
Ekstern person
T Jørgensen
Ekstern person
F Madsen
Ekstern person
Alexander Teumer
- University Medicine Greifswald
- German Centre for Cardiovascular Research
Ekstern person
Harald Grallert
- German Center for Diabetes Research (DZD)
- Helmholtz Zentrum München - German Research Center for Environmental Health
- German Center for Diabetes Research
- Research Unit of Molecular Epidemiology
- Institute of Epidemiology II
- German Center for Diabetes Research
Ekstern person
Mark I McCarthy
- University of Oxford
- Oxford University Hospitals NHS Foundation Trust
- Churchill Hospital
Ekstern person
Konstantin Strauch
- Helmholtz Zentrum München - German Research Center for Environmental Health
- Ludwig Maximilian University of Munich
- Boston University
Ekstern person
Lise Lotte Nystrup Husemoen
Ekstern person
J Wouter Jukema
- Leiden University
- Interuniversity Cardiology Institute of the Netherlands
- Boston University
Ekstern person
Annette Peters
- German Centre for Cardiovascular Research
- German Center for Diabetes Research (DZD)
- Helmholtz Zentrum München - German Research Center for Environmental Health
- German Center for Diabetes Research
Ekstern person
Panos Deloukas
- Wellcome Sanger Institute
- Queen Mary University of London
- King Abdulaziz University
Ekstern person
Thomas Meitinger
- Helmholtz Zentrum München - German Research Center for Environmental Health
- Technical University of Munich
- German Centre for Cardiovascular Research
- Boston University
Ekstern person
Uwe Völker
- University of Greifswald
- University Medicine Greifswald
- German Centre for Cardiovascular Research
- Boston University
Ekstern person
Christa Meisinger
- German Center for Diabetes Research (DZD)
- Helmholtz Zentrum München - German Research Center for Environmental Health
Ekstern person
N H Nielsen
Ekstern person
Massimo Mangino
- King's College London
- Guy's and St Thomas' NHS Foundation Trust
- Boston University
Ekstern person
Mary F Feitosa
- Washington University School of Medicine
- Washington University St. Louis
- Department of Genetics
Ekstern person
Andrew Wong
Ekstern person
Leo-Pekka Lyytikäinen
Ekstern person
Terho Lehtimäki
- Tampere University
- Boston University
- Erasmus University Rotterdam
- Fimlab Laboratories
Ekstern person
Barbara Thorand
- German Center for Diabetes Research (DZD)
- Helmholtz Zentrum München - German Research Center for Environmental Health
Ekstern person
Jerome I Rotter
- University of California at Los Angeles
- Boston University
- Institute for Translational Genomics and Population Sciences
Ekstern person
Betina Heinsbæk Thuesen
Ekstern person
Christian Gieger
- Helmholtz Zentrum München - German Research Center for Environmental Health
- German Center for Diabetes Research
- Research Unit of Molecular Epidemiology
- Institute of Epidemiology II
Ekstern person
Jaakko Tuomilehto
- Danube University Krems
- King Abdulaziz University
- National Institute for Health and Welfare
- Dasman Diabetes Institute
- Institute of Applied Genetics and Department of Molecular and Medical Genetics, Ft. Worth, USA; Center of Excellence in Genomic Medicine Research (CEGMR), King Abdulaziz University, Jeddah, Saudi Arabia.
Ekstern person
Diana Kuh
Ekstern person
Niels Henrik Nielsen
Ekstern person
Aarno Palotie
- Wellcome Sanger Institute
- University of Helsinki
- Broad Institute
- Harvard University
- Helsingin Yliopisto
Ekstern person
N H Nielsen
Ekstern person
Martina Müller-Nurasyid
- Helmholtz Zentrum München - German Research Center for Environmental Health
- Ludwig Maximilian University of Munich
- German Centre for Cardiovascular Research
Ekstern person
Jacob P Thyssen
Ekstern person
Heikki A Koistinen
- National Institute for Health and Welfare
- University of Helsinki
- Minerva Foundation Institute for Medical Research Helsinki
Ekstern person
Henri Wallaschofski
Ekstern person
John C Chambers
- Imperial College London
- London North West University Healthcare NHS Trust
- National Health Service
- BRTI & Imperial College London
Ekstern person
Pim van der Harst
- University of Groningen
- Boston University
- Netherlands Heart Institute
- Academic Medical Centre
Ekstern person
Kent D Taylor
- University of California at Los Angeles
- Boston University
- Institute for Translational Genomics and Population Sciences
Ekstern person
Mika Kähönen
Ekstern person
Alisa K Manning
- Broad Institute
- Harvard University
- Center for Genomic Medicine
- Boston University
Ekstern person
Elina Hyppönen
Ekstern person
Alana Cavadino
Ekstern person
Charlotta Pisinger
Ekstern person
Eric Boerwinkle
- University of Texas Health Science Center at Houston
- Baylor College of Medicine
- School of Public Health
Ekstern person
Rainer Rauramaa
- University of Eastern Finland
- Kuopio Research Institute of Exercise Medicine
Ekstern person
Dorret I Boomsma
Ekstern person
Runa Vavia Fenger
Ekstern person
Marika Kaakinen
Ekstern person
Annette Peters
- Institute of Epidemiology II, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany.
- Research Unit of Molecular Epidemiology
- Institute of Epidemiology II
- Boston University
Ekstern person
Marit E Jørgensen
Ekstern person
C. Vidal
Ekstern person
Melanie Waldenberger
- Helmholtz Zentrum München - German Research Center for Environmental Health
- German Centre for Cardiovascular Research
- Boston University
Ekstern person
Sara M Willems
Ekstern person
Sofus C Larsen
Ekstern person
Nilesh J Samani
- University of Leicester
- Glenfield Hospital
- Department of Cardiovascular Sciences
- Boston University
Ekstern person
Philippe Froguel
Ekstern person
Lavinia Paternoster
Ekstern person
Marie Loh
- Imperial College London
- University of Oulu
- Agency for Science, Technology and Research
Ekstern person
J D Johansen
Ekstern person
Markus Perola
- National Institute for Health and Welfare
- University of Helsinki
- Helsingin Yliopisto
- University of Tartu
Ekstern person
Gonneke Willemsen
Ekstern person
Betina Heinsbaek Thuesen
Ekstern person
Chris Power
Ekstern person
Arturo Gonzalez-Quintela
Ekstern person
Man Li
Ekstern person
Nele Friedrich
Ekstern person
Pål R Romundstad
Ekstern person
Kristiane A Engebretsen
- Kobenhavns Universitet
- Academic Medical Centre
- University of Copenhagen
Ekstern person
Marjo Riitta Jarvelin
Ekstern person
Xiuqing Guo
Ekstern person
Janina S Ried
- Helmholtz Zentrum München - German Research Center for Environmental Health
Ekstern person
Marie Standl
- Helmholtz Zentrum München - German Research Center for Environmental Health
Ekstern person
Jaakko Kaprio
Ekstern person
Carmen Vidal
Ekstern person
Lars Frølund
Ekstern person
James S Pankow
Ekstern person
Anne E Justice
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina, USA.
- Geisinger Medical Center
- University of North Carolina at Chapel Hill
Ekstern person
Flemming Madsen
Ekstern person
P B Szecsi
Ekstern person
A. Gonzalez-Quintela
Ekstern person
Albert Hofman
- Erasmus MC University Medical Center
- Erasmus University Rotterdam
- Netherlands Genomics Initiative
Ekstern person
John R B Perry
- University of Cambridge
- King's College London
- University of Oxford
- University of Exeter
Ekstern person
Torben Sigsgaard
- Afdeling for Miljø- og Arbejdsmedicin, Århus Universitet
- Aarhus University
Ekstern person
Lise Lotte N Husemoen
Ekstern person
Hanne Elberling
Ekstern person
Inês Barroso
- Wellcome Sanger Institute
- University of Cambridge
- NIHR Cambridge Biomedical Research Centre
Ekstern person
Ingrid B Borecki
- Division of Statistical Genomics
- Department of Genetics
- Washington University School of Medicine
- Regeneron Pharmaceuticals, Inc.
Ekstern person
Marcus Dörr
- University Medicine and Ernst-Moritz-Arndt-University Greifswald
- University Medicine Greifswald
- Boston University
- German Centre for Cardiovascular Research
Ekstern person
Jacqueline M Vink
Ekstern person
Richard W Morris
Ekstern person
Timo A Lakka
- University of Eastern Finland
- Kuopio Research Institute of Exercise Medicine
Ekstern person
Robert A. Scott
- University of Georgia
- University of Cambridge School of Clinical Medicine
Ekstern person
Seppo Koskinen
Ekstern person
Danish Saleheen
- University of Pennsylvania
- University of Cambridge
- Center for Non-Communicable Diseases
- Centre for Non-Communicable Diseases
Ekstern person
Loic Yengo
Ekstern person
Betina Thuesen
Ekstern person
Mika Kivimaki
Ekstern person
Jennifer A Brody
Ekstern person
Nikolaj Drimer Berg
Ekstern person
Gudmar Thorleifsson
Ekstern person
Lise-Lotte Husemoen
Ekstern person
Tiinamaija Tuomi
- University of Helsinki
- Folkhalsan
- Umeå University
- Helsingin Yliopisto
- Hospital District of Helsinki and Uusimaa
Ekstern person
Bo Isomaa
- Folkhalsan
- Folkhalsan Research Centre, Helsinki
- Malmska Municipal Health Care Center and Hospital
Ekstern person
L L N Husemoen
Ekstern person
Megan L Grove
- University of Texas Health Science Center at Houston
- School of Public Health
Ekstern person
Erkki Vartiainen
- Greater Green Triangle University Department of Rural Health
- National Institute for Health and Welfare
Ekstern person
Mike A Nalls
Ekstern person
Aki S Havulinna
- Department of General Practice and Primary Health Care, University of Helsinki
- Institute of Molecular Medicine Finland
Ekstern person
R V Fenger
Ekstern person
Jaspal S Kooner
- London North West University Healthcare NHS Trust
- Imperial College London
- National Health Service
- Imperial College Healthcare NHS Trust
Ekstern person
Jouke Jan Hottenga
Ekstern person
George Davey Smith
- University of Bristol
- Bristol University
- Bristol National Institute of Health Research Biomedical Research Centre
Ekstern person
Michael Roden
- Heinrich Heine University Düsseldorf
- German Center for Diabetes Research (DZD)
Ekstern person
Jesper Elberling
Ekstern person
Jonathan Marten
Ekstern person
C Vidal
Ekstern person
Chiea-Chuen Khor
- National University of Singapore
- Singapore National Eye Center
- Agency for Science, Technology and Research
Ekstern person
Dabeeru C Rao
Ekstern person
A Gonzalez-Quintela
Ekstern person
Tiina Laatikainen
- National Institute for Health and Welfare, Kuopio, Finland; Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland.
- Greater Green Triangle University Department of Rural Health
- National Institute for Health and Welfare
- University of Eastern Finland
Ekstern person
Jennifer Kriebel
- German Center for Diabetes Research (DZD)
- Helmholtz Zentrum München - German Research Center for Environmental Health
Ekstern person
Tine W Hansen
Ekstern person
Søren J Nielsen
Ekstern person
S Goya Wannamethee
Ekstern person
Goo Jun
- University of Michigan, Ann Arbor
- University of Texas Health Science Center at Houston
Ekstern person
Joanna M. M. Howson
- University of Cambridge
- Yale University
- MRC/BHF Cardiovascular Epidemiology Centre
Ekstern person
Daniel Tiller
Ekstern person
John Danesh
- Wellcome Sanger Institute
- University of Cambridge
- MRC/BHF Cardiovascular Epidemiology Centre
Ekstern person
Ivana Kolcic
Ekstern person
Traci M Bartz
Ekstern person
Martin Preisig
Ekstern person
Alex McConnachie
Ekstern person
Johan H Bjørngaard
- Norges teknisk-naturvitenskapelige universitet
- Department of Clinical Pharmacology, St. Olavs Hospital Trondheim University Hospital
Ekstern person
Fernando Rivadeneira
- Erasmus MC University Medical Center
- Erasmus University Rotterdam
- Netherlands Genomics Initiative
Ekstern person
Mariaelisa Graff
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina, USA.
Ekstern person
Francesco Gianfagna
Ekstern person
L L N Husemoen
Ekstern person
Meg E Fluharty
Ekstern person
Beverley Balkau
Ekstern person
Peter Kovacs
Ekstern person
Ruth J F Loos
Ekstern person
Peter H Whincup
Ekstern person
Nikolaj D Berg
Ekstern person
Andrew D Johnson
Ekstern person
Mette Aadahl
Ekstern person
Goncalo R Abecasis
Ekstern person
John A Curtin
Ekstern person
Pierre Fontanillas
Ekstern person
Nita G Forouhi
Ekstern person
Camilla L Asferg
Ekstern person
C Vidal
Ekstern person
Susana Sans
Ekstern person
Christian Herder
- Heinrich Heine University Düsseldorf
- German Center for Diabetes Research (DZD)
Ekstern person
Robin Young
- University of Cambridge
- MRC/BHF Cardiovascular Epidemiology Centre
- University of Glasgow
Ekstern person
Kristian Hveem
- Norwegian University of Science and Technology
- Norges teknisk-naturvitenskapelige universitet
- Nord-Trøndelag Health Trust
Ekstern person
Angela Döring
Ekstern person
Anders Hamsten
Ekstern person
M Meldgaard
Ekstern person
Ching-Ti Liu
Ekstern person
Stefan Weiss
- University Medicine and Ernst-Moritz-Arndt-University Greifswald
- German Centre for Cardiovascular Research
- Boston University
Ekstern person
Y S Prakash
Ekstern person
Alexander Kluttig
Ekstern person
Sebastian E Baumeister
- University Medicine Greifswald
- Ludwig Maximilian University of Munich
Ekstern person
Carmen Navarro
- Murcia Health Authority
- CIBER - Center for Biomedical Research Network
- University of Murcia
Ekstern person
Hester M den Ruijter
Ekstern person
Loïc Yengo
Ekstern person
Katja Borodulin
Ekstern person
K Sørensen
Ekstern person
Bruno Stricker
Ekstern person
Claude Bouchard
- Pennington Biomedical Research Centre
- LSU Pennington Biomedical Research Center
Ekstern person
Bjørn Olav Åsvold
Ekstern person
David Schlessinger
Ekstern person
Mark A Sarzynski
Ekstern person
Leo-Pekka Lyytikainen
Ekstern person
Cornelia M van Duijn
- Erasmus University Rotterdam
- Centre for Medical Systems Biology & Netherlands Consortium on Healthy Aging
- Boston University
Ekstern person
Klaus Bønnelykke
Ekstern person
Carmen Vidal
Ekstern person
Manuel A Ferreira
- Royal Brisbane and Women's Hospital
- Queensland Institute of Medical Research
Ekstern person
Camilla Noelle Rathcke
Ekstern person
Peter J van der Most
Ekstern person
Hamdi Mbarek
Ekstern person
Gerard Pasterkamp
Ekstern person
Eco J C de Geus
Ekstern person
Elisabeth Steinhagen-Thiessen
- Free University of Berlin
- Charité – Universitätsmedizin Berlin
Ekstern person
Jing Hua Zhao
Ekstern person
J P Thyssen
Ekstern person
Ralph A DeFronzo
- University of Texas at San Antonio
- University of Texas Health Science Center at San Antonio
Ekstern person
Pascal Demoly
Ekstern person
Sylvain Sebert
Ekstern person
Cornelia Huth
- German Center for Diabetes Research (DZD)
- Helmholtz Zentrum München - German Research Center for Environmental Health
Ekstern person
David M Evans
Ekstern person