1. 1. JW Rippon . Department of Medicine/Dermatology, University of Chicago Medical Center, 5841 South Maryland Avenue. Box 409, Chicago, IL 60637.
2. 2. ES Beneke, and A Rogers . Department of Botany and Plant Pathology, 166 Plant Pathology Building, Michigan State University, East Lansing. MI 48823.
3. 3. J Kane . Public Health Laboratory, Ontario Department of Health, Box 9000, Postal Terminal A, Toronto, Ontario MSW IRS, Canada.
4. 4. I Weitzman . Department of Health, City of New York Bar. of Laboratories, 455 First Avenue, New York, NY 10016.
5. 5. M McGinnis . Clinical Micro. Laboratory, North Carolina Memorial Hospital, Chapel Hill, NC 27514.