Timmermans, Sjoerd T.
Reijnierse, Esmee M.
Pasma, Jantsje H.
Trappenburg, Marijke C.
Blauw, Gerard J.
Maier, Andrea B.
Meskers, Carel G. M.
Article History
Received: 17 August 2017
Accepted: 29 December 2017
First Online: 15 January 2018
Ethics approval and consent to participate
: The study was reviewed and approved by the Medical Ethics Committee of Leiden University Medical Center. The need for individual informed consent was waived, as this retrospective research was based on regular clinical care. Records were anonymized prior to the start of the study.
: Not applicable.
: The authors declare that they have no competing interests.
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