Tom Mala is consultant (upper GI surgery) and professor at the Department of Gastrointestinal Surgery, Oslo University Hospital and Head of the Research Group "Morbid Obesity" and the Research Group «Esophageal and Gastric Disease». Main interests are surgical techniques and outcome after bariatric surgery, and gastric and esophageal cancer surgery. Head of the Norwegian Esophageal Cancer Consortium «NORECa».