title: Nocturnal neck movements and sleep apnea in headache.
authors.forename: M P
authors.initials: MP
authors.lastname: Biber
mesh_terms: D006261:Headache / Q000209:etiology*; D006801:Humans; D009333:Neck / Q000503:physiopathology*; D012891:Sleep Apnea Syndromes / Q000150:complications*; D013997:Time Factors