Stalking the wily senior. Elderly hard to pin down, but booming market makes it worth effort. JWT Specialized Communications (Dallas, TX).
Herreria
J
J
D000329:Advertising; D000368:Aged; D003253:Consultants; D006299:Health Services for the Aged / Q000458:organization & administration* / Q000706:statistics & numerical data; D006801:Humans; D008389:Marketing of Health Services / Q000379:methods*; D011788:Quality of Life; D014481:United States