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Howard I Maibach Editor & Author

Rhoda G. M. Wang, Ph.D., is DABT Regulatory Toxicologist Department of Pesticide Regulation California Environmental Protection Agency, Sacramento, California, USA. James B. Knaak, Ph.D, is Product Stewardship Scientist Occidental Chemical Corporation, Niagara Falls, New York, USA. Howard I. Maibach, M.D., is Professor of Dermatology Department of Dermatology University of California, San Francisco, California, USA.