E. T. Clayson, D. W. Vaughn, B. L. Innis, M. P. Shrestha, R. Pandey, and D. B. Malla, “Association of Hepatitis ’E’ Virus With an Outbreak of Hepatitis at a Military Training Camp in Nepal”, Med. J. Shree Birendra Hosp., vol. 1, pp. 45–49, Sep. 1998.