Four Methods of Recruiting Couples Into a Longitudinal Study of Physical Activity in People With Osteoarthritis: Recruitment, Retention, and Lessons Learned.
Carthron DL, Phillips A, Cuthbertson CC, Ellis KR, Altpeter M, Callahan LF, Bahorski S, Rini C. Four Methods of Recruiting Couples Into a Longitudinal Study of Physical Activity in People With Osteoarthritis: Recruitment, Retention, and Lessons Learned. Front Public Health. 2018; 6:197.