Jantaro, S., W. Sayowan, N. Kotchabhakdi, and S. Iamsupasit. “Effect of Comedy Video Clip on Autonomic Response and Subjective Happiness of Thai Early Adults”. Journal of Health Research, vol. 28, no. 4, July 2017, pp. 221-7, https://he01.tci-thaijo.org/index.php/jhealthres/article/view/93564.