Received: 30 November 2018
Accepted: 8 March 2019
First Online: 19 March 2019
Ethics approval and consent to participate
: This research project complies with the principles of the Declaration of Helsinki (18th World Medical Assembly, 1964). Patients were informed verbally and in writing, and they signed the informed consent before their inclusion in the study.
: Not applicable.
: The authors declare that they have no competing interests.
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