National Health Research Fellowship and Traineeship Act of 1973 : hearings before the Subcommittee on Public Health and Environment of the Committee on Interstate and Foreign Commerce, House of Representatives, Ninety-third Congress, first session, on H.R. 5640 and H.R. 5948, bills to amend the Public Health Service Act to establish a national program of health research fellowships and traineeships to assure the continued excellence of biomedical research in the United States, and for other purposes, March 20, 22, and 23, 1973.