NephroWorld [1] is the most visited
virtual Community and Marketplace for
Professionals
Patients, Organizations
and Companies related to Nephrology.
Links:
[1] http://www.nephroworld.com/main.asp?area=USA&frame=
[2] http://smtp.realneo.us/virtual-comunities-example-sites/medical-virtual-communities
[3] http://smtp.realneo.us/virtual-comunities-example-sites/medical-virtual-communities/oncology-nursing-society-virtual-community