Walid S. Arnaout, M.D., F.A.C.S. 

• American Association for the Study of Liver Diseases
•  American Society of Transplant Surgeons
• Liver Tumor.org
• The Carcinoid Cancer Foundation, Inc.
• Society of Surgical Oncology
• American Cancer Society
• American Liver Foundation
• American College of Surgons
• National Cancer Institute