JAPAN BILIARY ASSOCIATION
, JAPAN PANCREAS SOCIETY
, THE JAPANESE CANCER ASSOCIATION
, JAPAN SOCIETY OF CLINICAL ONCOLOGY
, The Japan Society of Hepatology
, JAPANESE SOCIETY FOR ABDOMINAL EMERGENCY MEDICINE
, JAPAN SURGICAL ASSOCIATION
, JAPANESE SOCIETY OF HEPATO-BILIARY-PANCREATIC SURGERY
, THE JAPANESE SOCIETY OF GASTROENTEROLOGICAL SURGERY
, JAPAN SURGICAL SOCIETY