1. Practical Management of Disorders of Liver, Pancreas and Biliary Tract.;Twiss,1955
2. Treatment of Biliary Dyskinesia with Special Reference to Sphincterotomy;Lester;Arch. Surg,1952
3. Postcholecystectomy Oral Cholangiography;Twiss;Arch. Int. Med,1955
4. Twiss, J. R. and Oppenheim, E.: Lac. cif., p. 52.
5. Some Clinical Features of Gallbladder Disease;Winklestein;Geriatrics,1953