1. Attending Physician in Adolescent Medicine, Criag Dalsimer Division of Adolescent Medicine, Children’s Hospital of Philadelphia, Instructor of Pediatrics, University of Pennsylvania, Perelman School of Medicine, 3615 Civic Center Blvd, Philadelphia, PA 19104, USA
2. Assistant Professor of Pediatrics, Division of Adolescent/Young Adult Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA