Text and Data Mining valid from 2019-11-11
Received: 7 November 2018
Accepted: 21 October 2019
First Online: 11 November 2019
Ethics approval and consent to participate
: Ethical approval was attained from the Mahidol University Institutional Review Board (MU-IRB 2013/092.2108). Prior to testing, all participants received written and verbal descriptions of the experiment and provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.