Duane DiFranco

Is there an “unhealthy volunteer effect” in mental health outpatient research?

M. Valenstein, K. Zivin, P. Pfeiffer, 2010, Psychiatry Research.

"No-shows": who fails to follow up with initial behavioral health treatment?

M. Valenstein, K. Zivin, R. McCammon, 2009, The American journal of managed care.