1. University Hospital Ulm; Institute of Pharmacology of Natural Products & Clinical Pharmacology; Helmholtzstrasse 20 Ulm Baden-Württemberg Germany 89081
2. Westpfalz Hospital; Department of Internal Medicine - Angiology; Im Flur 1 Kusel Westphalia Germany 66869
3. Valduce Hospital; Gastrenterology Unit; Via Dante 11 Como Italy 22100
4. Friedrich-Alexander-Universität; Institute of Pharmacology and Toxicology; Erlangen Germany
5. Diakonissen Stiftungs Krankenhaus; Department of Medicine; Hilgardstrasse 26 Speyer Rhineland Palatinate Germany 67346
6. University Hospital Ulm; Institute of Pharmacology of Natural Products and Clinical Pharmacology; Helmholtzstrasse 20 Ulm Baden-Württemberg Germany 89081