1. The age factor in the mortality rate of patients undergoing surgery of the biliary tract;Glenn;Surg. Gynec. & Obst.,1955
2. Biliary tract surgery in the aged patient;Strohl;Surg. Gynec. & Obst.,1953
3. Biliary surgery in the aged;Quigley;New England J. Med.,1939
4. Annual report on surgery of the biliary system and pancreas for 1946;Walters,1948
5. Surgery in the aged;Welch;New England J. Med.,1948