1. The training of the surgeon;Halsted;Johns Hopkins Hosp Bull,1904
2. Two centuries of American medicine 1776-1996;Bordley,1976
3. Residents and residencies;Sealy;Ann Thorac Surg,1971
4. William Stewart Halsted: our surgical heritage;Cameron;Ann Surg,1997
5. Rhoads JE. Personal communication, May 22, 1998.