Birth size and gestational age in opposite-sex twins as compared to same-sex twins: An individual-based pooled analysis of 21 cohorts

Aline Jelenkovic, Reijo Sund, Yoshie Yokoyama, Yoon-Mi Hur, Vilhelmina Ullemar, Catarina Almqvist, Patrik K. E. Magnusson, Gonneke Willemsen, Meike Bartels, Catharina E. M. van Beijsterveldt, Leonie H. Bogl, Kirsi H. Pietilainen, Eero Vuoksimaa, Fuling Ji, Feng Ning, Zengchang Pang, Tracy L. Nelson, Keith E. Whitfield, Esther Rebato, Clare H. LlewellynAbigail Fisher, Gombojav Bayasgalan, Danshiitsoodol Narandalai, Morten Bjerregaard-Andersen, Henning Beck-Nielsen, Morten Sodemann, Adam D. Tarnoki, David L. Tarnoki, Syuichi Ooki, Maria A. Stazi, Corrado Fagnani, Sonia Brescianini, Lise Dubois, Michel Boivin, Mara Brendgen, Ginette Dionne, Frank Vitaro, Tessa L. Cutler, John L. Hopper, Robert F. Krueger, Matt McGue, Shandell Pahlen, Jeffrey M. Craig, Richard Saffery, Claire M. A. Haworth, Robert Plomin, Ariel Knafo-Noam, David Mankuta, Lior Abramson, S. Alexandra Burt, Kelly L. Klump, Robert F. Vlietinck, Catherine A. Derom, Ruth J. F. Loos, Dorret I. Boomsma, Thorkild I.A. Sorensen, Jaakko Kaprio, Karri SilventoinenVis 38 andreVis mindre