[1]
N. R. Wijayanti, S. . Lestari Ramadhani Nasution, . E. . Girsang, and A. . Napiah Nasution, “Implementation Of The Covid 19 Vaccine At The Royal Prima Marelan Hospital In 2022”, IJHP, vol. 2, no. 4, pp. 714–717, Aug. 2022.