Decades after spontaneous HBsAg clearance the CD8+ T cell immune response is less vigorous compared to chronic hepatitis B viral infection - Kefalakes, H; Jochum, C; Bohrer, AM; Hilgard, G; Kahraman, A; El Hindy, N; Heinemann, F; Gerken, G; Timm, J (Zeitschrift für Gastroenterologie, 2014)