title: Secretion of 3-Methoxy-4-hydroxymandelic acid and 3-methoxy-4-hydroxyphenolacetic acid by pilots in relation to flying.
mesh_terms: D000337:Aerospace Medicine; D000401:Aircraft; D002395:Catecholamines / Q000652:urine; D002940:Circadian Rhythm; D004702:Endocrine Glands / Q000502:physiology; D006801:Humans; D008297:Male; D010648:Phenylacetates / Q000652:urine*; D005082:Physical Exertion; D013315:Stress, Psychological / Q000652:urine; D013997:Time Factors; D014642:Vanilmandelic Acid / Q000652:urine*
chemical_list: D002395:Catecholamines; D010648:Phenylacetates; D014642:Vanilmandelic Acid