1. Department of Medical MicrobiologyLeiden University Medical CenterLeidenthe Netherlands
2. Department of Gastroenterology and HepatologyAmsterdam University Medical CentersAmsterdamthe Netherlands
3. Department of GastroenterologyLeiden University Medical CenterLeidenthe Netherlands
4. Department of Internal MedicineErasmus Medical CenterRotterdamthe Netherlands
5. Department of Internal MedicineAmsterdam University Medical CentersAmsterdamthe Netherlands
6. Department of Internal MedicineLeiden University Medical CenterLeidenthe Netherlands
7. Department of Gastroenterology and HepatologySpaarne GasthuisHoofddorpthe Netherlands
8. Department of Epidemiology and Data ScienceAmsterdam University Medical CentersAmsterdamthe Netherlands
9. Department of Medical Microbiology and Infection ControlAmsterdam University Medical CentersAmsterdamthe Netherlands
10. Unaffiliated
11. Department of BiobankingLeiden University Medical CenterLeidenthe Netherlands
12. Department of GastroenterologyHaaglanden Medisch CentrumThe Haguethe Netherlands