title: Headache and drowsiness in a 22 year old student.
authors.affiliation: Cornwall Gastrointestinal Unit, Royal Cornwall Hospital, Truro TR1 3LJ.
authors.forename: Hon Man
authors.initials: HM
authors.lastname: Jor
authors.forename: Harry R
authors.initials: HR
authors.lastname: Dalton
mesh_terms: D000328:Adult; D002245:Carbon Dioxide / Q000506:poisoning*; D005260:Female; D020773:Headache Disorders / Q000209:etiology*; D006801:Humans; D012894:Sleep Stages / Q000502:physiology*
chemical_list: D002245:Carbon Dioxide