Singh, N.J., et al. “Prevalence of Hepatitis E and Hepatitis B Dual Infection in North India (Delhi)”. Acta Biomedica Atenei Parmensis, vol. 83, no. 3, Mar. 2013, pp. 197-01, https://mattioli1885journals.com/index.php/actabiomedica/article/view/2709.