title: Lip incompetence and its relationship to skeletal and dental morphology--an electromyographic investigation.
mesh_terms: D004576:Electromyography; D005145:Face / Q000033:anatomy & histology; D005260:Female; D006801:Humans; D008046:Lip / Q000503:physiopathology*; D008297:Male; D009055:Mouth / Q000033:anatomy & histology