Lertsirimunkong, J., W. Thavornwattanayong, P. Hirunkanakorn, R. Buranapatanapong, S. Jermtienchai, and N. Mingmoree. “Costs per DALYs Averted of Quadrivalent Influenza Vaccine versus Trivalent Influenza Vaccine in Elderly Population in Thailand”. Siriraj Medical Journal, vol. 73, no. 4, Mar. 2021, pp. 259-67, doi:10.33192/Smj.2021.34.