Famciclovir treatment of chronic hepatitis B in heart transplant recipients: H. Wedemeyer, K.H.W. Bo¨ker, K. Pethig(*), D.R. Petzold(#), P. Flemming(§), E.G. Rambusch, M. Bastu¨rk(#), E. Gamburg(#), J. Vollmar(&), K.E. Griffin(&), A. Haverich(*), and M.P. Manns. Depts. Gastroenterology, Cardiovascular Surgery(*), Virology(#) and Pathology(§), Hannover Medical School; Smithkline Beecham Pharmaceuticals, Harlow, England(&)