V. Sanansilp, P. Euasobhon, Q. V. Than, P. Rushatamukayanunt, S. Jirachaipitak, and S. Eiamtanasate, “Effectiveness of the Four-Frequency Protocol of Repetitive Peripheral Magnetic Stimulation (rPMS) for Chronic Pain”, Siriraj Med J, vol. 74, no. 8, pp. 518–529, Aug. 2022.