Hyperhomocysteinemia: a risk factor for placental abruption or infarction - Goddijn-Wessel, TA; Wouters, MG; van de Molen, EF; Spujbroek, MD; Steegers-Theunissen, RP; Blom, HJ; Boers, GH; Eskes, TK (Eur J Obstet Gynecol Reprod Biol, 1996)