Ethics approval and consent to participate
INFILTRATION
We confirm that all methods were carried out in accordance with relevant guidelines and regulations. An informed consent was obtained for all participants before the infiltration including all the information about the procedure, the benefits and the possible risks. The trial was approved by the three Ethics Committees of ULB; the Ethics Committee of Erasme Hospital (main centre), the Ethics Committee of Saint-Pierre Hospital and the Ethics Committee of Braine l’Alleud Hospital (P2020/557, 31th of December 2020 - B4062020000221). These three hospitals are part of the ULB (Université Libre de Bruxelles).