1. Institute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
2. University Clinic of Dermatology and Venereology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
3. Clinics of Gastroenterology, City Hospital Magdeburg, Klinikum Magdeburg GmbH, Magdeburg, Germany