1. Hosoi, Kiyoshi and Alvarez, Walter C. : The Influence of Sex on the Incidence of Gastro-Intestinal Disease, Human Biology, February, 1930.
2. Eobertson, H. E.: Silent Gallstones, Gastroenterology, 5: 345–372, November, 1945.
3. Sanders, John T. and Wilkinson, Walter, R.: Biliary Tract Surgery, Southern Med. J., 39:961–966, December, 1946.
4. Eliason, E. L. and Stevens, L. W.: Acute Cholecystitis, Surg. Gyneeol. & Ob., 78:98–103, January, 1944.
5. Clagett, O. Theron: Diseases of Gallbladder: Diagnosis and Management, Surgical Clin. of North America, August, 1945.