1. From the Department of Internal Medicine, General Hospital Oberndorf, Oberndorf, Austria (EA, DL, and CD); the Department of General Internal Medicine, Department of Immunology and Infectious Diseases, Medical University of Innsbruck, Austria (IT, MT, and GW); the Department of Pathology (HH and OD) and the First Department of Medicine (MS), Paracelsus Private Medical University Salzburg, Austria