Document is current

Article History

Received: 26 June 2019

Accepted: 2 December 2019

First Online: 14 December 2019

Compliance with ethical standards

:

: The authors declare that they have no conflict of interest.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.

: Informed consent was obtained from all individual participants included in the study.