Wilkens, Olivier E.
Hannink, Gerjon http://orcid.org/0000-0001-9526-3775
van de Groes, Sebastiaan A. W.
Article History
Received: 9 March 2019
Accepted: 29 July 2019
First Online: 7 August 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: No ethical approval was obtained because this study was a systematic review with meta-analysis using anonymized data from other published cohort studies.
: For this type of study informed consent is not required.
: The datasets generated and/or analyzed during the current study are not publicly available but are available from the corresponding author (GH) on reasonable request.