“…After an exhaustive search of databases for studies comparing rFSH and urinary-derived FSH, 29 published RCTs were identified. Of these 29 RCTs, we excluded three studies in which a GnRH agonist protocol was not used, 522,523,1148 two studies in which a short GnRH agonist protocol was used, 524,525 one study in which a quasi-randomisation method was used, 526 one study published only as an abstract in which no data were presented, 527 and one other study published only as an abstract that we were unable to obtain a copy of. 528 Fertility: assessment and treatment for people with fertility problems 60…”