The paper on Hepatitis E Virus “Khuroo MS:  Study of an Epidemic of Non-A, Non-B Hepatitis:  possibility of another human hepatitis virus distinct from post-transfusion non-A, non-B type. Am J Med 1980; 68:818-24” was reproduced  in the book “Classic Papers in Viral Hepatitis” edited by Christine A. Lee and Howard C. Thomas, Science Press, 1988, page184-190. On discovery of hepatitis viruses, Robert H. Purcell from NIH Bethseda MD wrote “Simultaneously with these studies, Mohammed Sultan Khuroo, another young gastroenterologist, was studying water borne epidemic of hepatitis in the moutainous Kashmir region of North India. The hepatitis in Kashmir….Thus the fifth recognised human hepatitis was discovered and initially called epidemic or enterically transmitted NANB hepatitis virus and subsequently designated HEV.”(Purcell H. The discovery of hepatitis viruses. Gastroenterology 1993; 104:955-63.)  Click here to view the classic paper reproduced.