Received: 22 November 2019
Accepted: 15 January 2020
First Online: 20 February 2020
Ethics approval and consent to participate
: All procedures performed were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study was approved by the local ethical committee (committee’s reference number 15092014). Written informed consent was obtained from all patients included in the study.
: Not applicable.
: The authors declare that they have no conflict of interest.