P. Sirited, R. Jitpornkulwasin, M. Phadungyam, J. Sinthusuwan, and S. Thongphet, “The Wooden Massage Roller : Healthy Innovation from Palmyra Palm for Elderly People with a Muscle Pain”, J Royal Thai Army Nurses, vol. 21, no. 1, pp. 1–8, Apr. 2020.