Haftel Hilary M, Hicks Patricia J
Department of Pediatrics and Communicable Diseases, C S Mott Children's Hospital, University of Michigan, Ann Arbor MI 48109-5718, USA.
Pediatrics. 2011 Apr;127(4):601-3. doi: 10.1542/peds.2010-3767. Epub 2011 Mar 7.