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Participant characteristics associated with withdrawal from a large randomized trial of spermicide effectiveness

Elizabeth G Raymond email, Pai Lien Chen email, Bosny Pierre-Louis email, Joanne Luoto email, Kurt T Barnhart email, Lynn Bradley email, Mitchell D Creinin email, Alfred Poindexter email, Livia Wan email, Mark Martens email, Robert Schenken email, Cate F Nicholas email and Richard Blackwell email

BMC Medical Research Methodology 2004, 4:23doi:10.1186/1471-2288-4-23

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