13
Countries
16
Hospitals
39
Patients included
| Country | Hospital | City | No. of patients included |
| Netherlands | Leiden University Medical Center | Leiden | 12 |
| University Cancer Center Leiden-The Hague | The Hague | 0 | |
| Croatia | University Hospital Center Zagreb | Zagreb | 0 |
| Czech Republic | Charles University | Prague | 0 |
| Denmark | Vejle Hospital – Lillebælt | Vejle | 0 (open) |
| Hungary | Semmelweis University Budapest | Budapest | 0 |
| Iceland | National University Hospital | Reykjavik | 0 (open) |
| Macedonia | University of Ss. Cyril and Methodius | Skopje | 10 |
| Portugal | Hospital Garcia de Orta | Almada | 6 |
| Serbia | University of Belgrade | Belgrade | 0 |
| Institute of Oncology Vojvodine Faculty of Medicine Novi Sad |
Sremska Kamenica Novi Sad |
0 | |
| Spain | Hospital Clinic | Barcelona | 0 |
| Vall d’Hebron Institute of Oncology | Barcelona | 0 | |
| Sweden | Uppsala University Hospital | Uppsala | 0 |
| Ukraine | Kyiv Oncology Centre | Kyiv | 1 |
| United Kingdom | University Hospital of North Tees | Hardwick | 2 |
| Brazil | Napoleão Laureano Hospital | João Pessoa | 8 |