1. Skarzynska J, Cienciala A, Madry R, Barucha P, Kwasniak M, Wojewoda T, Sroga J: Hospital infection in general surgery wards. Przegl Epidemiol. 2000, 54 (3–4): 299-304.
2. Troillet N, Petignant C, Matter M, Eisenring MC, Mosimann F, Francioli P: Surgical site infection surveillance: an effective preventive measure. Rev Med Suisse Romande. 2001, 121 (2): 125-8.
3. Burkitt Jf: Identification of the sources of staphylococci contaminating the surgical wound during operation. Ann Surg. 1963, 158: 898-904.
4. Schwartz SI, Comshires G, Spencer FC, Dally GN, Fischer J, Galloway AC: Principles of surgery. 1999, NY: McGraw-Hill companies, 83-7
5. Habte-Gabr E, Gedebau M, Kronvall G: Hospital-acquired infections among surgical patients in Tikur Anbessa Hospital, Addis Ababa, Ethiopia. Am J Infect Control. 1988, 7-13.