Harahap, Z. C. S., E. Effendy, and N. M. Nasution. “The Differences of Anxiety Scores in the Pangkalan-I Defense Battalion Warriors, Belawan Between the Pandemic Time COVID-19 and the Normal Period Before Pandemic”. Open Access Macedonian Journal of Medical Sciences, vol. 9, no. T3, June 2021, pp. 139-42, doi:10.3889/oamjms.2021.6367.