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First Online: 14 January 2020

Compliance with Ethical Standards

:

: The authors have no competing financial or other interests to declare in relation to this manuscript.

: The dataset used and/or analyzed during the current study are available from the corresponding author upon reasonable request.

: All authors have provided consent for publication.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Ethics Committee of Hue University of Medicine and Pharmacy and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.