Ogban GI, Iwuafor AA, Emanghe UE, et al. Sciencedomain International. Asian Journal of Medicine and Health. 2020;

Surakat OA, Alabi OR, Ogundana TE, et al. Pan African Journal of Life Science. 2020;

Patel C, Coulibaly J, Hofmann D, et al. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America. 2020;

Trotignon G, Jones I, Ali SS, et al. Research Square. 2020;

Ayuk A, Ohuche I, Ubesie A, et al. Medknow. Nigerian Postgraduate Medical Journal. 2020; 27 (3) : 184.

Mazani E, Taylor M, Kjetland EF, et al. AOSIS. Southern African Journal of Infectious Diseases. 2020;

Shumba TW, Haufiku D, Amukugo H. Emerald. Journal of Health Research. 2020;

Alemu A, Bitew ZW, Worku T. Springer Science and Business Media LLC. BMC Infectious Diseases. 2020;

MUSTAFA U, Tarimo DS. Research Square. 2020;

Erickson L, Litschka-Koen T, Pons J, et al. Rural and remote health. 2020; 20 (3) : 5494.