Summary of studies included in the final analysis
| Author | Year | Design | Country | Multi or single center | Study dates | N |
| Sauvageau et al25 | 2007 | Retrospective | USA | Single | February 2005 to May 2006 | 10 |
| Baek et al26 | 2016 | Retrospective | South Korea | Single | September 2010 to September 2015 | 17 |
| Baracchini et al27 | 2017 | Prospective | Italy | Single | January 2016 to July 2016 | 23 |
| Delgado Acosta et al28 | 2017 | Retrospective | Spain | Single | December 2008 to January 2016 | 20 |
| Chang et al29 | 2018 | Retrospective | South Korea | Multi | September 2010 to December 2015 | 48 |
| Nappini et al30 | 2018 | Retrospective | Italy | Single | July 2010 to February 2016 | 17 |
| Zhou, et al31 | 2018 | Retrospective | China | Single | January 2014 to December 2016 | 21 |
| Ahmed et al32 | 2018 | Retrospective | Canada | Single | – | 4 |