Recruitment and retention of women in a large randomized control trial to reduce repeat preterm births: the Philadelphia Collaborative Preterm Prevention Project
Title:
Recruitment and retention of women in a large randomized control trial to reduce repeat preterm births: the Philadelphia Collaborative Preterm Prevention Project
Author:
Webb, David A Coyne, James C Goldenberg, Robert L Hogan, Vijaya K Elo, Irma T Bloch, Joan R Mathew, Leny Bennett, Ian M Dennis, Erika F Culhane, Jennifer F