A pilot, multisite, randomized controlled trial of a self-directed coping skills training intervention for couples facing prostate cancer: accrual, retention, and data collection issues

- Lambert, Sylvie D.; McElduff, Patrick; Chong, Peter; Girgis, Afaf; Levesque, Janelle V.; Regan, Tim W.; Turner, Jane; Candler, Hayley; Mihalopoulos, Cathrine; Shih, Sophy T. F.; Kayser, Karen