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, J I; Huijgens, P C; van Geijn, H P; Dekker, G A (Eur J Obstet Gynecol Reprod Biol, 1998)