Received: 12 July 2018
Revised: 17 July 2020
Accepted: 20 July 2020
First Online: 15 September 2020
Compliance with Ethical Standards
: Violette Coppens and Manuel Morrens have received funding for scientific research unrelated to the current project from Johnson & Johnson, Belgium.
: The study was approved by the ethical committee board of UZA/UA (University Hospital of Antwerp).
: All participants had given informed consent before entering the study.