Table 1.
Participating centers and case distribution over the time
| Participating centers | N of cases | Pre-COVID era (2017–2019) | COVID era (2020–2021) | Post-COVID era (2022–2023) |
|---|---|---|---|---|
| Birmingham Children’s Hospital-Birmingham (UK) | 26 | 11 | 4 | 11 |
| Hôpital Femme-Mère-Enfant-Lyon (France) | 24 | 13 | 3 | 8 |
| Santobono-Pausilipon Hospital-Naples (Italy) | 22 | 7 | 0 | 15 |
| Rennes University Hospital-Rennes (France) | 17 | 4 | 6 | 7 |
| Hospital Regional Universitario-Malaga (Spain) | 14 | 6 | 2 | 6 |
| Ospedale Pediatrico Bambino Gesù-Rome (Italy) | 14 | 2 | 3 | 9 |
| Pediatric Neurosurgery, University Hospital-Bordeaux (France) | 13 | 6 | 0 | 7 |
| IRCCS Istituto Scienze Neurologiche di Bologna-Boulogne (Italy) | 13 | 6 | 0 | 7 |
| Asklepios Children´s Hospital-St. Augustin (Germany) | 13 | 4 | 1 | 8 |
| Hospital Sant Joan De Déu-Barcelona (Spain) | 11 | 0 | 3 | 8 |
| University Hospitals-Leuven (Belgium) | 11 | 6 | 1 | 4 |
| Meyer Children’s Hospital IRCCS-Florence (Italy) | 11 | 3 | 3 | 5 |
| University of Florence/Meyer Children’s Hospital IRCCS-Florence (Italy) | 11 | 5 | 2 | 4 |
| Fondazione Policlinico Universitario A. Gemelli IRCCS-Rome (Italy) | 7 | 1 | 1 | 5 |
| ASST Sette Laghi-Varese (Italy) | 6 | 4 | 1 | 1 |
| Hospital Dona Estefânia-Centro Hospitalar Universitário-Lisboa (Portugal) | 6 | 1 | 3 | 2 |
| Hôpitaux Universitaires de Genève-Geneva (Switzerland) | 5 | 0 | 0 | 5 |
| Dana Children’s Hospital-Tel Aviv (Israel) | 4 | 1 | 2 | 1 |
| Johannes Kepler University Hospital-Linz (Austria) | 4 | 1 | 1 | 2 |
| Ospedale Infantile Regina Margherita-Turin (Italy) | 3 | 1 | 0 | 2 |
| Department of Neuroscience, University of Padova-Padua (Italy) | 3 | 2 | 0 | 1 |
| University Medical Center-Ljubljana (Slovenia) | 3 | 0 | 1 | 2 |
| Pediatric Neurosurgery, University Medical Center-Göttingen (Germany) | 3 | 0 | 0 | 3 |
| ASST Niguarda-Milan (Italy) | 2 | 1 | 0 | 1 |
| Aristotle University of Thessaloniki-Thessaloniki (Greece) | 2 | 0 | 1 | 1 |
| Azienda Ospedaliero Universitaria delle Marche-Ancona (Italy) | 1 | 0 | 0 | 1 |
| Centro Hospitalar Lisboa Norte-Hospital Santa Maria-Lisboa (Portugal) | 1 | 0 | 0 | 1 |
| Fondazione IRCCS Istituto Neurologico Carlo Besta-Milan (Italy) | 1 | 0 | 1 | 0 |
| Hospital CUF Descobertas-Lisboa (Portugal) | 1 | 0 | 0 | 1 |
| Ankara University Department of Neurosurgery-Ankara (Turkey) | 1 | 0 | 1 | 0 |
| Erasmus MC Sophia Children’s Hospital-Rotterdam (Netherlands) | 1 | 0 | 0 | 1 |
| Overall | 254 | N of cases/year | ||
| 28.3 | 20 | 86 | ||