Book excerpt: Year Book of Pediatrics brings you abstracts of the articles that reported the year's breakthrough developments in pediatrics, carefully selected from more than 500 journals worldwide. Expert commentaries evaluate the clinical importance of each article and discuss its application to your practice. Articles are selected to cover the full breadth of the specialty, from gastroenterology, hematology, adolescent medicine, allergy and immunology, to urology, neurology, and therapeutics and toxicology.