Low-molecular-weight heparin combined with aspirin in pregnant women with thrombophilia and a history of preeclampsia or fetal growth restriction: a preliminary study - Riyazi, N; Leeda, M; de Vries, JI; Huijgens, PC; van Geijn, HP; Dekker, GA (Eur J Obstet Gynecol Reprod Biol, 1998)