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In page Joseph Sonnabend:

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In the early 1970s Sonnabend moved to New York City to be an associate professor at the Mount Sinai School of Medicine. After losing his interferon research grant he worked at Kings County Hospital Center and as Director of Continuing Medical Education at the Bureau of VD Control for the New York City Department of Health.[1][4] In 1978 he started a private clinic for sexually transmitted infections in Greenwich Village,[4] for which he was renowned.[5]