Lila E. Nachtigall, M.D., is professor of Obstetrics and Gynecology at New York University School of Medicine and director of the Women's Wellness Center at NYU Medical Center. She has worked in the field of clinical research on HRT for the last thirty years.
Joan Rattner Heilman is a highly respected health writer, with more than a dozen books and hundreds of newspaper and magazine articles to her credit. She is the former women's editor of a national magazine.