Medical Device Amendments of 1975 : hearings before the Subcommittee on Health and the Environment of the Committee on Interstate and Foreign Commerce, House of Representatives, Ninety-fourth Congress, first session on H.R. 5545, a bill to amend the Federal Food, Drug, and Cosmetic Act to provide for the safety and effectiveness of medical devices intended for human use : H.R. 974, a bill to regulate defective, ineffective, and unreliable medical devices and S. 510, a bill to protect the public health by amending the Federal Food, Drug, and Cosmetic Act to assure the safety and effectiveness of medical devices, July 28, 29, 30, and 31, 1975.