Social security chief looks at medicare future.
D000368:Aged; D001291:Attitude of Health Personnel; D011307:Drug Prescriptions; D005251:Fees, Medical; D006699:Home Care Services; D006801:Humans; D007878:Legislation as Topic; D006278:Medicare; D009934:Organization and Administration; D012943:Social Security; D012946:Social Welfare; D014481:United States