1. Department of Surgery, Medstar Washington Hospital Center, Washington, DC2Department of Surgery, Alfa Institute of Biomedical Sciences, Marousi, Athens, Greece3Society of Junior Doctors, Athens, Greece
2. Society of Junior Doctors, Athens, Greece4Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
3. Department of Surgery, Alfa Institute of Biomedical Sciences, Marousi, Athens, Greece
4. Division of Surgical Oncology, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland