Iwai, M., Koyama, S., Takeda, K., Hirakawa, Y., Motoya, I., Sakurai, H., Kanada, Y., Okada, Y., Kawamura, N., Kawamura, M. and Tanabe, S. 2024. Effect of Lee Silverman Voice Treatment® BIG on the major motor symptoms in patients with moderate Parkinson’s disease: an observational study. JOURNAL OF GERONTOLOGY AND GERIATRICS. 72, 2 (May 2024), 76-82. DOI:https://doi.org/10.36150/2499-6564-N711.