RESEARCH ARTICLE Hila Shalev Ram, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel Department of Obstetrics and Gynecology, Meir Medical Center, Kfar Saba, Israel Search for more papers by this author Shai Ram, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel Department of Obstetrics and Gynecology, Lis Maternity Hospital, Sourasky Medical Center, Tel Aviv, Israel Search for more papers by this author Itay Wiser, Sackler Faculty of Medicine, Tel Aviv...