S. M. Mohammed Al-Subari, M. Saleem, S. Khadka, N. M. Ahmed Mahmood, T. M. Ziad Alhouzani, and D. B. Shrestha, “COVID-19 Pandemic in Yemen”, Journal of Karnali Academy of Health Sciences, vol. 3, no. 2, pp. 159–163, Sep. 2020.