433 QUANTIFICATION OF LARGE, MIDDLE AND SMALL HEPATITIS B VIRUS (HBV) SURFACE PROTEIN (HBsAg) FRACTIONS IN PATIENTS WITH ACUTE HEPATITIS B. - Wiegand, S.B.; Geipel, A.; Bremer, B.; Markova, A.; Bremer, C.M.; Manns, M.P.; Wedemeyer, H.; Glebe, D.; Cornberg, M. (Journal of Hepatology, 2013)