Immediate vs. delayed insertion of intrauterine contraception after second trimester abortion: study protocol for a randomized controlled trial
妊娠中期流产后立即放置宫内节育器与延迟放置宫内节育器的比较：一项随机对照试验的研究方案
期刊:Trials
影响因子:2
doi:10.1186/1745-6215-12-149
Norman, Wendy V; Kaczorowski, Janusz; Soon, Judith A; Brant, Rollin; Bryan, Stirling; Trouton, Konia J; Dicus, Lyda
