Retraction Retraction dated 2021-11-25

Article History

Received: 28 May 2018

Accepted: 16 October 2018

First Online: 29 October 2018

Change Date: 25 November 2021

Change Type: Correction

Change Details: This article has been retracted. Please see the Retraction Notice for more detail:

Change Details: https://doi.org/10.1186/s40644-021-00434-2

Ethics approval and consent to participate

: This prospective study was approved by the Institutional Review Board (Ethics Committee of SMU, approval no. SMU2/231/13), and written informed consent was acquired from all patients.

: Publication is approved by all authors and tacitly or explicitly by the responsible authorities where the work was carried out.

: The authors declare that they have no competing interests.

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