Dr. Anthony F Jahn and Dr. Youngnan Jenny Cho

Anthony F. Jahn, M.D., noted author and professor of clinical otolaryngology at the Columbia University College of Physicians and Surgeons, has offices in New York and New Jersey. His book, Care of the Professional Voice, is now in its second printing. Dr. Youngnan Jenny Cho is a New York City-based otolaryngologist who is medical director for New York City Opera and also works with the Metropolitan Opera.