1 Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria.
2 Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria. Electronic address: guenter.weiss@i-med.ac.at.