The hidden menace.
D000368:Aged; D001342:Autonomic Nervous System Diseases / Q000175:diagnosis*; D006801:Humans; D007024:Hypotension, Orthostatic / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D012791:Shy-Drager Syndrome / Q000175:diagnosis* / Q000628:therapy