Bennis, Frank C. http://orcid.org/0000-0002-6233-9101
Teeuwen, Bibi
Zeiler, Frederick A.
Elting, Jan Willem
van der Naalt, Joukje
Bonizzi, Pietro
Delhaas, Tammo
Aries, Marcel J.
Article History
First Online: 13 February 2020
Compliance with ethical standards
:
: All authors declare that they have no conflict of interest.
: This study adhered to ethical guidelines. For this type of retrospective study, formal consent is not required. Both medical ethical committees approved this study. In Groningen, the need for informed consent was waived. In Maastricht, informed consent was obtained from the closest relative.