Affinity groups. Senior savvy is the first step.
Babwin
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D000368:Aged; D006279:Health Maintenance Organizations / Q000191:economics / Q000458:organization & administration* / Q000706:statistics & numerical data; D006293:Health Promotion / Q000458:organization & administration*; D006304:Health Status; D006801:Humans; D006278:Medicare / Q000458:organization & administration*; D017060:Patient Satisfaction; D014481:United States