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Article History

Received: 8 July 2018

Revised: 31 October 2018

Accepted: 26 November 2018

First Online: 10 December 2018

Ethics approval and consent to participate

: This study was performed in compliance with the declaration of Helsinki and was approved by the Institutional Review Board of National Taiwan University Hospital, Taipei, Taiwan (201111012RIB and 200907056R). All participants or their legal representatives provided written informed consent.

: Not applicable for consent for publication, because no individuals’ data were reported (including individual details, images, or videos) in this study.

: The authors declare that they have no competing interests.

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