American Cancer Society
American College of Surgeons
American Society of Clinical Oncology
Associación Argentina de Cirugía

CancerNet
European Society of Medical Oncology (ESMO)
Federação Latino Americana de Cirurgia

Free Medical Journals
Instituto Nacional de Cancer (Brasil)
National Cancer Institute - USA
Johns Hopkins
MD Anderson
Mayo Clinic
Memorial Sloan-Ketterring Cancer Center
União Internacional Contra o Câncer (UICC)