World journal of surgery: official journal of the International Society of Surgery (ISS), International Association of Endocrine Surgeons (IAES), International Association for the Surgery of Trauma and Surgical Intensive Care (IATSIC), International Association for Surgical Metabolism and Nutrition (IASMEN), Breast Surgery International (BSI), International Federation of Surgical Colleges (IFSC) (John Wiley & Sons Ltd., 1977)