Article History
Received: 14 May 2020
Revised: 22 February 2021
Accepted: 16 March 2021
First Online: 18 May 2021
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 this 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.