Funding for this research was provided by:
Stichting Tegen Kanker (2018-133)
Received: 6 May 2020
Accepted: 8 June 2021
First Online: 9 July 2021
: The study was conducted in accordance with the Declaration of Helsinki and in accordance with the IGH-GHP principles (International Conference of Harmonisation Guidelines on Good Clinical Practice) and was approved by the Ethics Committee Leuven (University Hospitals Leuven, Belgium; ML2524/2013). Samples were taken after patients gave their written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.