The influence of age and gender on motor and non-motor features of early Parkinsons disease: initial findings from the Oxford Parkinson Disease Center (OPDC) discovery cohort

Szewczyk-Krolikowski K, Tomlinson P, Nithi K, Wade-Martins R, Talbot K, Ben-Shlomo Y, Hu MTM. The influence of age and gender on motor and non-motor features of early Parkinsons disease: initial findings from the Oxford Parkinson Disease Center (OPDC) discovery cohort. Parkinsonism Relat Disord. 2014; 20(1): 99105.