1. Dynamics of Medical Care;Logan,1972
2. Prevalence of Selected Chronic Digestive Conditions, United States;National Center for Health Statistics;DHEW Publ. No. (HRA) 74-1510,1974
3. The prevalence of inguinal hernia in adult Ghanaian males;Belcher;Trop Geogr Med,1978
4. External and internal abdominal hernias;Zimmerman;Am J Gastroenterol,1963
5. Abdominal Operations;Maingot,1961