Founded in 1901, Childrens Hospital Los Angeles has been treating the most seriously ill and injured children in Los Angeles for more than a century, and it is acknowledged throughout the United States and around the world for its leadership in pediatric and adolescent health. Childrens Hospital is one of America's premier teaching hospitals, affiliated with the Keck School of Medicine of the University of Southern California since 1932. It is a national leader in pediatric research. Childrens Hospital Los Angeles treats 62,000 patients a year in its Emergency Department. It admits more than 11,000 children a year to the hospital, 50-percent of which are children under four years of age. There are about 287,000 visits a year to its 29 outpatient clinics and nearly 2,800 visits at community sites through its Division of Adolescent Medicine. Childrens Hospital Los Angeles is able to offer the optimum in multidisciplinary care, with nearly 100 pediatric medical and surgical subspecialties and subspecialty support service areas.