Macones, G A The association between maternal cocaine use and placenta previa. [electronic resource] - American journal of obstetrics and gynecology Nov 1997 - 1097-100 p. digital Publication Type: Journal Article ISSN: 0002-9378 Standard No.: 10.1016/s0002-9378(97)70022-x doi Subjects--Topical Terms: AdultCase-Control StudiesCesarean Section--adverse effectsCocaine--adverse effectsFemaleHumansPlacenta Previa--chemically inducedPregnancyRisk Factors