19. Have serological evidence of infectious liver disease at screening defined as: Hepatitis A virus IgM antibody (IgM anti-HAV) positive, or Hepatitis B surface antigen (HBsAg) positive and Hepatitis B virus IgM antibody (IgM anti-HBc) positive (To exclude subjects who got acute infectious Hepatitis B virus disease), or hepatitis C virus antibody (anti-HCV) positive;