1. From the Department of Internal Medicine III (Z.K., S.G., R.Ö., A.B., T.J.D., H.A.K.), University of Heidelberg, Germany; the Department of Internal Medizin II (J.T.), University of Ulm, Germany; the Graduate School of Medical Sciences (K.E.), Kyushu University, Fukuoka, Japan; and the Departments of Pathology and Molecular Microbiology and Immunology (N.R.R.) of The Johns Hopkins Medical Institutions, Baltimore, Md.