2) Shinefield HR, Aly R et al: Factors influ-encing colonization of mucous membranes and skin surfaces with Staphylococcus au-reus, Microbiology ed. by Schlessinger, D, p110, Am Soc for Microbil, Washington, D. C, 1975
3) Lidwell OM, Polakoff S et al: Staphylococ-cal infection in thoracic surgery: experi-ence in a subdivided ward, Journal of Hy-giene, 64: 321, 1966
4) Ward TT, Winn RE et al: Observations of, methicillin-resistant Staphylococcus au-reus. Role of antimicrobial therapy in in-fection control. Infect Control, 2: 453, 1981
5) White A: Relation between quantitative nasal cultures and dissemination of staph-ylococci. J Lab Clin Med, 58: 273, 1961