The book represents a substantial revision and reorganization of the text based on a complete review of the field of pediatrics. Efforts have also been made to keep a balance with incorporation of the curricular needs of the undergraduates, postgraduates and teachers in pediatrics. This edition has 239 chapters arranged in 21 major sections. The entire contents of the textbook are reorganized to provide relevant clinical information and national priorities at one site. All the chapters have been thoroughly revised and updated in a lucid and readable style and have undergone a three-tier review and edit process.