Received: 14 January 2021
Accepted: 22 March 2021
First Online: 7 April 2021
: This research was carried out according to the Helsinki Declaration ethic guidelines, updated at the World Medical Assembly in Fortaleza in 2013, for research with human subjects. All the participants were informed about the purpose of the study and gave their voluntary signed informed consent.
: Not applicable.
: The authors declare that they have no competing interests.