Rovers, J. F. J.
Wagter, L.V.
Greijmans, E.G.E.
Bovenschen, H. J.
Article History
Received: 17 April 2020
Accepted: 22 June 2020
First Online: 30 June 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Because of the retrospective study design, an ethical approval was not necessary.