This book gathers the research efforts of the last quarter century in pediatric epidemiology under a single cover for the first time. It draws on the experience of an international group of pediatric epidemiologists, all of whom are world authorities in their fields. In a consistent format they discuss biological considerations, patterns of occurrence, risk factors, and the impact of interventions for each type of disorder. The disorders reviewed include not only the old morbidity of childhood such as infections, birth defects, asthma, and cerebral palsy, but also the new morbidity: emotional...