Wijayanti, N. R., Lestari Ramadhani Nasution, S. ., Girsang, . E. . and Napiah Nasution, A. . (2022) “Implementation Of The Covid 19 Vaccine At The Royal Prima Marelan Hospital In 2022”, International Journal of Health and Pharmaceutical (IJHP), 2(4), pp. 714–717. doi: 10.51601/ijhp.v2i4.93.