Sawada, T.; Tateyama, N.; Ikeda, T.; Ishimaru, K. The Effect on Muscle Hardness of Acupuncture Stimulation Using Low-Reactive Level Laser Therapy and Silver Spike Point Therapy, Along With Stretching. Laser Ther 2020, 29 (1), 41-46. https://doi.org/10.5978/islsm.20-OR-04.