Received: 1 September 2021
Accepted: 23 February 2022
First Online: 14 November 2022
: This study was approved by the “Commission d’Ethique Biomédicale Hospitalo-facultaire” of the Université catholique de Louvain on 18 June 2012. Belgian registration No.: B40320121407. An informed consent was obtained from all study participants. All methods were performed in accordance with the relevant guidelines and regulations.
: The manuscript does not contain any individual person’s data in any form which would require a consent for publication.
: The authors declare that they have no competing interests.
: WF conceived the study design, collected the data, analysed the data and wrote the article; VR helped to establish the analysis methods, participated in the analyses and in writing the article; DV participated in writing the article; LV conceived the study design, analysed the data and participated in writing the article.
: Not applicable.