8) 厚生労働省 : 指定難病制度に於ける各疾患診断. http://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000062437.html (2020年2月15日アクセス)
12) Fahn S , Elton RL : Members of the UPDRS Development Committee. Unified Parkinson's Disease Rating Scale. Recent Developments in Parkinson's Disease, vol 2. (ed. by Fahn S, Marsden CD, Calne DB, et al), pp.153-163, Macmillan Health Care Information, NJ, 1987.
13) International Parkinson and Movement Disorder Society. https://www.movementdisorders.org (2020年2月15日アクセス)