1. “The operating room environment as affected by people and the surgical mask,”;Merril;Clinical Orthopaedics,1975
2. “Dispersal and acquisition of microorganisms,”;Noble,1971
3. “Contaminated surgery,”;Phyllis,1977
4. “Aseptic barriers—a surgeon's viewpoint,”;Harvey,1977
5. “Epidemics of postoperative wound infections associated with hair carriers,”;Peter;Lancet,1973