Al-ObaidiZ. M. J., HussainY. A., AliA. A., and Al-RekabiM. D. “The Influence of Vitamin-C Intake on Blood Glucose Measurements in COVID-19 Pandemic”. The Journal of Infection in Developing Countries, Vol. 15, no. 02, Mar. 2021, pp. 209-13, doi:10.3855/jidc.13960.