Catecholamines and sympathetic nervous activity in the elderly.
D000328:Adult; D000368:Aged; D002395:Catecholamines / Q000097:blood*; D004381:Duodenal Ulcer / Q000097:blood; D006801:Humans; D008657:Metabolic Clearance Rate; D008875:Middle Aged; D009638:Norepinephrine / Q000097:blood; D013564:Sympathetic Nervous System / Q000378:metabolism*
D002395:Catecholamines; D009638:Norepinephrine