Article History
Received: 12 February 2021
Revised: 24 March 2021
Accepted: 19 April 2021
First Online: 9 May 2021
Declarations
:
: The scientific guarantor of this publication is Robert Kwee.
: 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.
: The authors have significant statistical expertise.
: Written informed consent was not required for this study because of the meta-analysis.
: Institutional Review Board approval was not required because of the meta-analysis.
: • Multicentre study
Free to read: This content has been made available to all.