Received: 2 September 2019
Accepted: 18 November 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: In compliance with the declaration of Helsinki, the local ethics committee approved the conduction of this study (Date and number of IRB approval: December 30, 2019; 18–218). Individual consent for the study was waived as data acquisition was performed in an anonymous manner.
: Not applicable.
: The authors declare that they have no competing interests.