From the 1Centre d'étude du sommeil, Hôpital du Sacré-Coeur de Montréal and Department of Psychiatry, Université de Montréal, and the 2Department of Gynecology and Obstetrics, Hôpital du Sacré-Coeur de Montréal and Department of Gynecology and Obstetrics, Université de Montréal, Montréal, Québec, Canada.