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DONALD R. TANENBAUM maintains a private practice in New York and holds university and hospital appointments. He is a Past President of the American Academy of Orofacial Pain and received a DDS and MPH degree from Columbia University. S. L. ROISTACHER, a founding member of the International Association for the Study of Pain and the American Pain Society, for over 30 years chaired the Department of Dental Medicine, Queens Hospital Center, New York, and the committee on chronic headache pain. He received his DDS degree from New York University.