Dr. Ioannis Katsaros is a physician specializing in general surgery who currently serves as a resident at the Laikon General Hospital, while concurrently pursuing a Ph.D. at the National and Kapodistrian University of Athens (NKUA), Athens, Greece. He holds an M.D., an M.Sc. in clinical and surgical anatomy, and an M.Sc. in HPB surgery from the Democritus University of Thrace. His core research areas are surgical oncology (specifically HPB and upper GI), surgical anatomy, and systematic review and meta-analysis.