Authors: Cynthia S Shellhaas; Sharon Gilbert; Mark B Landon; Michael W Varner; Kenneth J Leveno; John C Hauth; Catherine Y Spong; Steve N Caritis; Ronald J Wapner; Yoram Sorokin; Menachem Miodovnik; Mary J O'Sullivan; Baha M Sibai; Oded Langer; Steven G Gabbe Journal: Obstet Gynecol Date: 2009-08 Impact factor: 7.661