Participating centres
| Country | Centres and affiliated networks |
| The Netherlands | Amsterdam UMC Leiden University Medical Centre Radboudumc Nijmegen University Medical Centre Utrecht (coordinating centre) National scleroderma network: Arthritis Research and Collaboration Hub (ARCH) |
| Belgium | University Hospital Ghent University Hospital Leuven National scleroderma network: Belgian Scleroderma Cohort |
| Germany | Ruhr University Bochum University Hospital Freiburg Universitats Klinikum Tuebingen Universitats Klinikum Wurzburg |
| Sweden | Karolinska University Hospital Stockholm Skåne University Hospital Lund |
| Switzerland | University Hospital Basel |
| Italy | ASST G.Pini-CTO, Milano |
| Croatia | University Hospital Zagreb |