title: The difference that makes a difference?
authors.forename: Anthony
authors.initials: A
authors.lastname: Propst
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Ginsburg
authors.forename: Elena
authors.initials: E
authors.lastname: Yanushpolsky
mesh_terms: D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D008183:Luteal Phase; D011247:Pregnancy; D011374:Progesterone / Q000008:administration & dosage*
chemical_list: D011374:Progesterone