Published Autho Article Title Elisa for IgG-class antibody to Hepatitis E virus based on a highly conserved, conformational epitope expressed in Eschericia coli. J. Vir. method. 81, 131-142, Year 1999 David A.Anderson, Fan Li, Michaela Riddell, Teresa Howard, Heng-Fong Seow, Josheph Torresi, Grillian Perry, Didi Summarside, Santosh Man Shreshta, Iswar Lal Shrestha.