Participant characteristics associated with withdrawal from a large randomized trial of spermicide effectiveness
与大型随机杀精剂有效性试验中退出者相关的参与者特征
期刊:BMC Medical Research Methodology
影响因子:3.4
doi:10.1186/1471-2288-4-23
Raymond, Elizabeth G; Chen, Pai Lien; Pierre-Louis, Bosny; Luoto, Joanne; Barnhart, Kurt T; Bradley, Lynn; Creinin, Mitchell D; Poindexter, Alfred; Wan, Livia; Martens, Mark; Schenken, Robert; Nicholas, Cate F; Blackwell, Richard