Cervical Pessary versus Expectant Management for the Prevention of Delivery Prior to 36 Weeks in Women with Placenta Previa: A Randomized Controlled Trial
宫颈托与期待疗法预防前置胎盘孕妇妊娠36周前分娩的随机对照试验
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doi:10.1055/s-0039-1687871
Stafford, Irene A; Garite, Thomas J; Maurel, Kimberly; Combs, C Andrew; Heyborne, Kent; Porreco, Richard; Nageotte, Michael; Baker, Susan; Gopalani, Sameer; Dola, Chi; How, Helen; Das, Anita F