Topical issues--a U.S. viewpoint.
Vlietstra
R E
RE
Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota 55905.
Frye
R L
RL
D002318:Cardiovascular Diseases / Q000175:diagnosis / Q000628:therapy*; D006801:Humans; D007388:Internal Medicine / Q000191:economics / Q000193:education / Q000639:trends*; D014481:United States