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About the article
Published Online: 2017-03-27
Published in Print: 2018-02-23
Conflict of interest: All of the contributing authors declare no conflict of interest.
Material and methods
Informed consent: Informed consent has been obtained from all individuals included in this study.
Ethical approval: The research related to human subject use has complied with all the relevant national regulations, and institutional policies, and is in accordance with the tenets of the Helsinki Declaration, and has been approved by the authors’ institutional review board or equivalent committee.