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Dr. Joseph M. Duvall has been the chairman of Dermatology at Mercy Hospital since 1983. He is also a clinical professor of Dermatology at St. Louis University School of Medicine. He has taught students and residents for 35 years. He has been listed as one of the "Best Doctors" in America for 15 consecutive years. Dr. Duvall treats all ages and has a special interest in severe acne and skin cancer.
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