Paul R. Harmatz, MD, is Professor in Residence, Department of Pediatrics, University of California San Francisco and UCSF Benioff Children's Hospital Oakland. He is the Medical Director of the Pediatric Clinical Research Program in Mucopolysaccharidoses (MPS) and Related Disorders. Dr. Harmatz completed his Pediatric internship and residency training at Harbor-UCLA Medical Center. Following a clinical and research fellowship in Pediatric Gastroenterology and Nutrition at Massachusetts General Hospital, he remained in Boston until 1992 as faculty in Pediatrics at Harvard Medical School. During the last 25 years, Dr. Harmatz has participated in clinical trials with MPS I, MPS II, IIIa, IIIb, IVa, VI, VII, and has managed clinical care for patients with MPS living in northern California.