A loss of nerve.
D001289:Attention Deficit Disorder with Hyperactivity / Q000178:diet therapy; D004033:Diet Fads; D005607:Fraud; D006801:Humans; D007859:Learning Disabilities / Q000628:therapy; D009014:Morals; D010819:Physician's Role; D012106:Research / Q000592:standards*; D012107:Research Design / Q000592:standards