Comparison of cryopreservation of supernumerary pronuclear human oocytes obtained after intracytoplasmic sperm injection (ICSI) and after conventional in-vitro fertilization. - Al Hasani,S.; Ludwig,M.; Gagsteiger,F.; Kupker,W.; Sturm,R.; Yilmaz,A.; Bauer,O.; Diedrich,K. (Hum Reprod, 1996)