C. Chaikoolvatana, A. Chaikoolvatana, N. Saisingh, A. Singkham, S. Worraratkul, and A. Toomrin, “The Development and Satisfaction Survey of Smoke-Free Community Network Online Service (SFC-NOS): Phase I”, SRIMEDJ, vol. 29, no. 1, pp. 20–28, Mar. 2014.