1. Cholecystitis and cholelithiasis: an analytical report of 1104 operative cases;Adams;Surg., Gynec. & Obst.,1947
2. Alexander: Quoted by Eliason and Stevens (ref. 16).
3. Pathologic changes of diseased gallbladders; new classification;Andrews;Arch. Surg.,1935
4. Gangrene and perforation of gallbladder;Bachhuber;Am. J. Surg.,1945
5. Bass: Quoted by Eliason and Stevens (ref. 16).