title: Too much, too soon? Doctors group warns against early specialization.
authors.forename: M
authors.initials: M
authors.lastname: Lord
mesh_terms: D000367:Age Factors; D001265:Athletic Injuries / Q000453:epidemiology; D002648:Child; D006801:Humans; D010372:Pediatrics; D012307:Risk Factors; D013177:Sports