The "happy puppet" syndrome: two new cases and a review of five previous cases.
D001259:Ataxia / Q000150:complications*; D002648:Child; D004569:Electroencephalography; D004827:Epilepsy / Q000150:complications*; D005145:Face; D005149:Facial Expression; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000150:complications*; D007845:Laughter; D008297:Male; D008334:Mandible / Q000002:abnormalities; D009468:Neuromuscular Diseases / Q000150:complications; D013577:Syndrome