Meta-analyses on prevalence of selected Parkinson’s nonmotor symptoms before and after diagnosis
Chen, Honglei, Edward J. Zhao, Wen Zhang, Yi Lu, Rui Liu, Xuemei Huang, Anna J. Ciesielski-Jones, Michele A. Justice, Deborah S. Cousins, Shyamal Peddada. (2015). "Meta-analyses on prevalence of selected Parkinson’s nonmotor symptoms before and after diagnosis." Transl. Neurodegener. 4(1).