Authors: W Katherine Yih; Martin Kulldorff; Bruce H Fireman; Irene M Shui; Edwin M Lewis; Nicola P Klein; James Baggs; Eric S Weintraub; Edward A Belongia; Allison Naleway; Julianne Gee; Richard Platt; Tracy A Lieu Journal: Pediatrics Date: 2011-04-18 Impact factor: 7.124