Burnham Jon M, Kreiger Portia A, Paessler Michele, Kersun Leslie S, Cron Randy Q
Division of Rheumatology, Department of Pediatrics, Children's Hospital of Philadelphia, 3615 Civic Center Blvd., Philadelphia, PA 19104, USA.
Arch Pediatr Adolesc Med. 2006 Nov;160(11):1177-9. doi: 10.1001/archpedi.160.11.1177.