Received: 23 April 2020
Revised: 29 May 2020
Accepted: 6 August 2020
First Online: 20 August 2020
Compliance with ethical standards
: Scientific guarantor of this publication: Jung Hwan Baek, Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center.
: 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.
: No complex statistical methods were necessary for this paper.
: Written informed consent was not required for this study because this study performed only systematic review and meta-analysis.
: Institutional Review Board approval was not required because this study performed only systematic review and meta-analysis.
: • systematic review• meta-analysis