Optimizing Virtual Follow-Up Care: Realist Evaluation of Experiences and Perspectives of Patients With Breast and Prostate Cancer - Sarah Scruton; Geoff Wong; Stephanie Babinski; Lauren R Squires; Alejandro Berlin; Julie Easley; Sharon McGee; Ken Noel; Danielle Rodin; Jonathan Sussman; Robin Urquhart; Jacqueline L Bender (Journal of Medical Internet Research)