Genetic and rare skin diseases.

Classification and Developmental Biology of Congenital Anomalies of the Hand and Upper Extremity

1Washington University School of Medicine, Campus Box 8233, 660 South Euclid Avenue, St. Louis, MO 63110. E-mail address: [email protected] 2Divisions of Pediatric Pathology and Human Anatomy, Department of Surgery, Loma Linda University, 24785 Stewart Street, Room B09c, Loma Linda, CA 92350