Back pain in children.
D000293:Adolescent; D001416:Back Pain / Q000175:diagnosis / Q000209:etiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007239:Infections / Q000150:complications; D007938:Leukemia / Q000150:complications; D008297:Male; D013122:Spinal Diseases / Q000150:complications