1. 1 OH. Mayo, and JH. da Silva (1833 ). Observations on injuries and disease of rectum. pp. 45 -46 . Burgess and Hill, London. (Quoted from Pilonidal cyst: cause and treatment. Observations on injuries and disease of rectum., 1833 ; 43 : 45 -46 .)
2. NEW APPROACH TO THE PROBLEM OF PILONIDAL SINUS
3. EASY AND SUCCESSFUL TREATMENT OF PILONIDAL SINUS AFTER EXPLANATION OF ITS CAUSATIVE PROCESS
4. 5 Department of Health (England and Wales ) Hospital Episode Statistics - 2000/-1. http://www.doh.gov.uk/hes/standard_data/available_tables/main_operations/tb02100e.xls.