title: The American Pediatric Society and The Society for Pediatric Research 1999 annual meeting. San Francisco, California, USA. May 1-4, 1999. Abstracts.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010372:Pediatrics