Determination of the longitudinal validity and minimally important difference of the 8-item Parkinson's Disease Questionnaire (PDQ-8)
Luo, Nan, Tan, Louis C. S., Zhao, Yingjiao, Lau, Puay-Ngoh, Au, Wing-Lok, Li, Shu Chuen
Progression of Parkinson's disease as evaluated by Hoehn and Yahr stage transition times
Zhao, Yin Jiao, Wee, Hwee Lin, Chan, Yiong-Huak, Seah, Soo Hoon, Au, Wing Lok, Lau, Puay Ngoh, Pica, Emmanuel Camara, Li, Shu Chuen, Luo, Nan, Tan, Louis C. S.
The use of Fogs' test to assess associated movements in parkinsonism, dystonia, and controls
Tuck, Keiran K., Yeow, Tow Chan, Morris, John G. L., Baker, Fran, Fung, Victor S. C.
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