Leon I. Hammer, M.D., is a graduate of Cornell University, Cornell Medical College, and the William A. White Institute of Psychoanalysis and Psychiatry. During the early 1970s he studied Chinese medicine in England with Dr. Richard Van Buren, and then apprenticed for eight years in New York and Massachusetts with Dr. John H.F. Shen, a widely recognized master of Chinese pulse diagnosis. Dr. Hammer practiced Chinese medicine until 1990, when he began teaching pulse workshops in the United States and abroad. He is the author of Dragon Rises, Redbird Flies, a study of the relationship between Chinese medicine and Western psychology, and is president of the Dragon Rises School of Oriental Medicine in Gainesville, Florida.