Received: 11 May 2020
Accepted: 6 August 2020
First Online: 17 August 2020
Ethics approval and consent to participate
: 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.