The power of a telephone.
Anderson
Howard J
HJ
D039604:Answering Services; D017598:Efficiency, Organizational; D006333:Heart Failure / Q000628:therapy*; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D008484:Medicaid / Q000191:economics; D006278:Medicare / Q000191:economics; D010865:Pilot Projects; D017216:Telemedicine; D013689:Telephone; D014481:United States