TY - RPRT TI - A prospective randomized study comparing intramuscular progesterone and 17alpha-hydroxyprogesterone caproate in patients undergoing in vitro fertilization-embryo transfer cycles. AU - L Costabile AU - S Gerli AU - C Manna AU - D Rossetti AU - G C Di Renzo AU - V Unfer PY - 2001 DO - 10.1016/s0015-0282(01)01901-x UR - https://pubmed.ncbi.nlm.nih.gov/11476795/ ID - 11476795 ER -