Umemura T, Kiyosawa K. Fatal HBV reactivation in a subject with anti-HBs and anti-HBc. Intern Med 2006 ; 45 : 747.
Umemura T, Tanaka E, Kiyosawa K, et al. Mortality secondary to fulminant hepatic failure in patients with prior resolution of hepatitis B virus infection in Japan. Clin Infect Dis 2008 ; 47: e52.