Effectiveness of Video Teletherapy in Treating Obsessive-Compulsive Disorder in Children and Adolescents With Exposure and Response Prevention: Retrospective Longitudinal Observational Study - Jamie D Feusner; Nicholas R Farrell; Mia Nunez; Nicholas Lume; Catherine W MacDonald; Patrick B McGrath; Larry Trusky; Stephen Smith; Andreas Rhode (Journal of Medical Internet Research)