Specialist physicians' knowledge and beliefs about telemedicine: a comparison of users and nonusers of the technology.

Telemedicine as a technology has been available for nearly 50 years, but its diffusion has been slower than many had anticipated. Even efforts to reimburse providers for interactive video (IAV) telemedicine services have had a limited effect on rates of participation. The resulting low volume of services provided (and consequent paucity of research subjects) makes the phenomenon difficult to study.