Pediatrics refers to the study and practice of childcare, especially of infants, children and adolescents. It is focused on providing special care and medicine to newly born babies and children suffering from diseases like congenital diseases, childhood cancer and other infectious diseases. Few of the sub-fields of pediatrics are allergy and immunology, child abuse, pediatric hematology, pediatric nephrology, neuropsychology, pediatric oncology, pulmonology, etc. This book includes some of the vital pieces of work being conducted across the world, on various topics related to pediatrics. The book presents this complex subject in the most comprehensible and easy to understand language. It will serve as a reference to a broad spectrum of readers.