Document is current

Article History

Received: 6 October 2017

Revised: 18 December 2017

Accepted: 21 December 2017

First Online: 30 December 2017

Compliance with ethical standards

:

: All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript.

: 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. This study protocol was approved by the Clinical Trials Ethics Committee (70904504/9).

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