1. First Department of Internal MedicineDivision of GastroenterologyJohann Wolfgang Goethe-University HospitalFrankfurt/MainGermany
2. Quality Management Group of Gastroenterologists in HesseGastroenterologie Hessen eGFrankfurt/MainGermany
3. Department of MedicineInstitute of Biostatistics and Mathematical ModelingJohann Wolfgang Goethe-UniversityFrankfurt/MainGermany
4. IOMTech GmbHBerlinGermany
5. Bürgerhospital FrankfurtDepartment of Internal MedicineFrankfurt/MainGermany