Funding for this research was provided by:
Grant for National Center for Global Health and Medicine (26-A-122)
Text and Data Mining valid from 2018-12-01
Received: 6 September 2017
Accepted: 1 November 2018
First Online: 5 December 2018
Ethics approval and consent to participate
: This study was approved by the National Center for Global Health and Medicine ethics committee (Approval number: NCGM-G-001752). This study was conducted with anonymous manner. However, informed consent was obtained with a consent form by explaining this study to participants. When the participant agreed to join this study, he checked the box of “YES” without his signature. The method of obtaining the consent was approved by the ethics committee. This style of informed consent was obtained from all of the participants.
: Not applicable.
: The authors declare that they have no competing interests.
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