article 2012 Randomized controlled trial comparing highly purified (HP-hCG) and recombinant hCG (r-hCG) for triggering ovulation in ART ·doi:10.1016/j.fertnstert.2012.07.630
review 2006 The Uterus and In Vitro Fertilization ·doi:10.1097/01.grf.0000197521.61306.51 De Ziegler, Dominique MD; Romoscanu, Ilinca MD; Ventura, Patricia MD; Ibecheole, Victoria MD; Fondop, Jean Jacques MD; Candolle, Gabriel De MD Author Information