Subject to regulations of the President, lightkeepers, assistant lightkeepers, and officers and crews of vessels of the former Lighthouse Service, including any such persons who subsequent to , were involuntarily assigned to other civilian duty in the Coast Guard, who were entitled to medical relief at hospitals and other stations of the Public Health Service prior to , and who retired under the provisions of , shall be entitled to medical, surgical, and dental treatment and hospitalization at hospitals and other stations of the Public Health Service.section 763 of title 33June 30, 19391939-06-30July 1, 19441944-07-01