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Article History

Received: 13 February 2020

Revised: 28 July 2020

Accepted: 14 August 2020

First Online: 9 September 2020

Ethics approval and consent to participate

: All analyses were based on previously published studies; thus, no ethical approval and patient consent are required.

: Not applicable.

: The datasets used and analysed during the current study are available from the corresponding author on reasonable request.

: The authors declare no competing interests.

: This research did not receive any specific grant from funding agencies in the public, commercial or not-for-profit sectors.