American Academy of Pediatrics (AAP):
http://www.aap.org/

National Association of Children's Hospital and Related Institutions (NACHRI)
www.childrenshospitals.net

University of Illinois Medical Center (UIMC)
http://uillinoismedcenter.org/

National Institutes of Health (NIH)
http://nih.gov/

HealthyChildren.Org
www.healthychildren.org