1. Institute of Translational Biomedicine, St. Petersburg State University, 199034 St. Petersburg, Russia
2. St. Petersburg State University Hospital, St. Petersburg State University, 199034 St. Petersburg, Russia
3. Department of Medicine, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia
4. Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany