Funding for this research was provided by:
Associated Medical Sciences, Chiang Mai University (AMS-2560)
Received: 15 August 2017
Accepted: 6 February 2018
First Online: 13 February 2018
Ethics approval and consent to participate
: This trial was approved by the ethical review committee for research in humans, Faculty of Associated Medical Sciences, Chiang Mai University (AMSEC-60EX-018:175/2560). The trial was conducted in accordance with the Declaration of Helsinki. All participants will be provided information about the study and enrolled into the trial if they meet all eligibility criteria and voluntarily sign an informed consent statement.
: Not applicable.
: The authors declare that they have no competing interests.
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