Recruitment and retention of subjects for a longitudinal cancer prevention study in an inner-city black community.
Recruitment and retention of subjects for a longitudinal cancer prevention study in an inner-city black community.
复制标题
招募和保留市中心黑人社区纵向癌症预防研究的受试者。
作者：
Blumenthal,DS;Sung,J;Coates,R;Williams,J;Liff,J
