1 Institute for Outcomes Research, Center for Medical Data Science, Medical University of Vienna, Vienna 1190, Austria.
2 Landesklinikum Wiener Neustadt, Wiener Neustadt, Austria.
3 Medical Center Landstraße of the ÖGK, Vienna, Austria.
4 Institute for Outcomes Research, Center for Medical Data Science, Medical University of Vienna, Vienna 1190, Austria; Ludwig Boltzmann Institute for Arthritis and Rehabilitation, Vienna, Austria. Electronic address: tanja.stamm@meduniwien.ac.at.
5 Clinical Division of Internal Medicine II, Medical University Innsbruck/Tirol Kliniken, Innsbruck, Austria.
6 School of Medicine, Sigmund Freud University Vienna, Vienna, Austria; Medical Center Mariahilf of the ÖGK, Vienna, Austria.