Clinical outcomes in relation to the daily dose of recombinant follicle-stimulating hormone for ovarian stimulation in in vitro fertilization in presumed normal responders younger than 39 years: a meta-analysis. - Sterrenburg MD; Veltman-Verhulst SM; Eijkemans MJ; Hughes EG; Macklon NS; Broekmans FJ; Fauser BC (Human Reproduction Update, 2011)