title: Investigation of 'syncope'.
authors.forename: D F
authors.initials: DF
authors.lastname: D'Costa
mesh_terms: D000368:Aged; D001794:Blood Pressure; D002940:Circadian Rhythm; D006801:Humans; D007024:Hypotension, Orthostatic / Q000150:complications* / Q000175:diagnosis; D013575:Syncope / Q000209:etiology*