GASTRIC SURGERY.
D013505:Digestive System Surgical Procedures; D005743:Gastrectomy; D005853:Geriatrics; D010437:Peptic Ulcer; D013274:Stomach Neoplasms; D013514:Surgical Procedures, Operative
GASTRECTOMY; GERIATRICS; PEPTIC ULCER; STOMACH NEOPLASMS; SURGERY, OPERATIVE