Centre Hospitalier Universitaire Brugmann, Brussels, Belgium
Algemeen Ziekenhuis Sint Lucas, Gent, Belgium
Imelda Ziekenhuis vzw, Bonheiden, Belgium
MC Leeuwarden, Leeuwarden, Friesland, Netherlands
Research Site, Venlo, Netherlands
Reumazorg ZWN, Goes, Zeeland, Netherlands
Research Site, Zaporizhzhya, Ukraine
Research Site, London, United Kingdom
Research Site, Seattle, Washington, United States
Research Site, Dnipropetrovsk, Ukraine
Research Site, Leuven, Belgium
Praxis Dr. Schmeel, Wesseling, Germany
Praxis Dr. Buttgereit, Wildau, Germany
Praxis Dr. Neisius, Stolberg, Germany
CRST, Turku, Finland
Tampere University Hospital, Tampere, Finland
ODL, Oulu, Finland