1 Institut national de la santé et de la recherche médicale U1018 (CESP), Villejuif, France; Université Paris-Sud, Kremlin-Bicêtre, France; Gustave Roussy, Villejuif 94805, France. Electronic address: marina.kvaskoff@gustaveroussy.fr.
2 MRC Centre for Reproductive Health, University of Edinburgh, Queen's Medical Research Institute, Edinburgh, UK.
3 Department of Epidemiology, Harvard T H Chan School of Public Health, Boston, MA, USA; Boston Center for Endometriosis, Boston Children's Hospital and Brigham & Women's Hospital, Boston, MA, USA; Department of Obstetrics, Gynecology, and Reproductive Biology, College of Human Medicine, Michigan State University, Grand Rapids, MI, USA.