Text and Data Mining valid from 2020-01-15
Received: 16 July 2019
Accepted: 15 December 2019
First Online: 15 January 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the institutional review board of Kyung Hee University, Korean Medicine Hospital at Gangdong in the Republic of Korea (KHNMCOH 2017–12-008). The investigation adhered to the tenets of the Helsinki Declaration. Participants and signed written informed consent forms to participate, explaining the nature of study and participant’s rights.
: Not applicable.
: The authors declare that they have no competing interests.