The Netherlands
- Radboud University, Nijmegen
- Erasmus Medical Center, Rotterdam
- Maastricht University Medical Center, Maastricht
United States of America
- University of California, Los Angeles
- North Eastern University, Boston
- Utah University, Salt lake City
-
The Johns Hopkins University School of Medicine, Baltimore
Switzerland
- Hochschule Lucerne, Lucerne
- University Hospital Basel, Basel
- Schiller AG, Baar
France
- INSERM, Paris
- Nancy University Hospital, Nancy
United Kingdom
- Aston University, Birmingham
Germany
- University of Cologne, Cologne