Aging population is redefining health care delivery.
D000368:Aged; D000375:Aging; D003695:Delivery of Health Care / Q000458:organization & administration*; D005544:Forecasting; D006301:Health Services Needs and Demand; D019456:Health Transition; D006801:Humans; D008875:Middle Aged; D009740:Nursing Staff / Q000458:organization & administration; D011158:Population Growth; D012179:Retirement; D014481:United States