The Health directory covers specific information about health such as child health, addictions, medicine, nursing, yoga, weight loss, pharmacy, reproductive health, specific substances.
Pediatric Oncall
Information for medical and paramedical personnel, and parents. A physician-only section requires log in and password.
http://www.pediatriconcall.com/
PediHeart
Free membership for health professionals provides access to medical information on congenital heart diseases.
http://www.pediheart.org/
PedTalk
Mailing list for discussion of managed care, running a practice, technological resources, and clinical discussions.
http://www.pcc.com/