Sathian, B., Asim, M., Banerjee, I., Pizarro, A. B., Roy, B., van Teijlingen, E. R., Nascimento, I. J. B. do and Alhamad, H. K. (2020) “Impact of COVID-19 on clinical trials and clinical research: A systematic review”, Nepal Journal of Epidemiology, 10(3), pp. 878–887. doi: 10.3126/nje.v10i3.31622.