Darmaa, O., A. Burmaa, B. Gantsooj, B. Darmaa, P. Nymadawa, S. Sullivan, and J. Fielding. “Influenza Epidemiology and Burden of Disease in Mongolia, 2013–2014 to 2017–2018”. Western Pacific Surveillance and Response, vol. 12, no. 2, June 2021, doi:10.5365/wpsar.2020.11.4.003.