title: Cycle lumping or--sampling a witches' brew?
authors.forename: P G
authors.initials: PG
authors.lastname: McDonough
mesh_terms: D010064:Embryo Implantation; D004717:Endometrium / Q000033:anatomy & histology*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D015588:Observer Variation