Olthof, A. W.
Borstlap, J.
Roeloffzen, W. W.
Callenbach, P. M. C.
van Ooijen, P. M. A.
Article History
Received: 13 December 2017
Revised: 2 March 2018
Accepted: 15 March 2018
First Online: 20 April 2018
Compliance with ethical standards
:
: The scientific guarantor of this publication is P.M.A. van Ooijen MSc PhD.
: The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
: One of the authors has significant statistical expertise.
: Written informed consent was not required for this study because patient data were anonymously used for the study and no interventions took place for the study.
: Institutional Review Board approval was not required because of the retrospective nature of the study.
: • retrospective• observational• performed at one institution