A Classification of Postural Sway Patterns During Upright Stance in Healthy Adults and Patients with Parkinson's Disease. - Tomohisa Yamamoto; Yasuyuki Suzuki; Kunihiko Nomura; Taishin Nomura; Takao Tanahashi; Kei Fukada; Takayuki Endo; Saburo Sakoda (J. Adv. Comput. Intell. Intell. Informatics, 2011)