Drummond, P D Extracranial vascular responses to sublingual nitroglycerin and oxygen inhalation in cluster headache patients. [electronic resource] - Headache Mar 1985 - 70-4 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0017-8748 Standard No.: 10.1111/j.1526-4610.1985.hed2502070.x doi Subjects--Topical Terms: AdultCluster Headache--chemically inducedHumansMiddle AgedNitroglycerin--pharmacologyOrbit--blood supplyOxygen--pharmacologyPulse--drug effectsRegional Blood Flow--drug effectsTemporal Arteries--physiopathologyVascular Headaches--physiopathology