1. Shaw, G. B. (1947). Man and Superman. Maxims for Revolutionists, p. 24. ( London: Constable )
2. Simmons, H. E. and Stolley, P. D. (1974). This is medical progress? Trends and consequences of antibiotic use in the United States. J. Am. Med. Assoc., 227, 1023
3. Report by the study group on the use of antimicrobial drugs. (1977). Prophylactic antimicrobial drug therapy at five London teaching hospitals. Lancet, 1, 1351
4. Editorial. (1976). Prophylactic povidone iodine. Lancet, 1, 73
5. Gilmore, O. J. A. and Sanderson, P. J. (1975). Prophylactic interparietal povidone-iodine in abdominal surgery. Brit. I. Surg., 62, 792