Kogan Michael D, Strickland Bonnie B, Newacheck Paul W
US Department of Health and Human Services, Health Resources and Services Administration, Maternal and Child Health Bureau, Rockville, Maryland, Rockville, MD 20857, USA.
Pediatrics. 2009 Dec;124 Suppl 4:S333-6. doi: 10.1542/peds.2009-1255B.