Adding serial N-terminal pro brain natriuretic peptide measurements to optimal clinical management in outpatients with systolic heart failure: a multicentre randomized clinical trial (NorthStar monitoring study)

Morten Schou, Finn Gustafsson, Lars Videbaek, Helge Robert Lind Andersen, Jens Toft, Ole Nyvad, Henrik Ryde, Lars Fog, Jens C H Jensen, Olav Wendelboe Nielsen, Søren Poul Lind Rasmussen, Jawdat Abdulla, Per R Hildebrandt, on behalf of the NorthStar Investigators