Pediatric Clinical Trials Market, By Phase (Phase I, Phase II, Phase III, and Phase IV), By Study Design (Treatment Studies and Observational Studies), By Therapeutic Area (Respiratory Diseases, Cardiovascular Diseases, and Neuropsychiatric Conditions, Oncology, Diabetes, and Others (Neuropsychiatric Conditions, etc.)), By Geography (North America, Latin America, Asia Pacific, Europe, Middle East, and Africa)