The Use of 17 Alpha-Hydroxyprogesterone Caproate (17P) in Women with Cervical Cerclage - Rebarber, Andrei; Cleary-Goldman, Jane; Istwan, Niki B; Rhea, Debbie J; Desch, Cheryl; Russo-Stieglitz, Karen; Saltzman, Daniel H (American Journal of Perinatology, 2008)