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APA Citation
Puschmann, A., Brighina, L., Markopoulou, K., Aasly, J., Chung, S. J., Frigerio, R., Hadjigeorgiou, G., Kõks, S., Krüger, R., Siuda, J., Wider, C., Zesiewicz, T. A., & Maraganore, D. M. (2015). clinically meaningful parameters of progression and long-term outcome of Parkinson disease: An international consensus statement. Parkinsonism & related disorders, 21(7), 675–682. http://access.bl.uk/ark:/81055/vdc_100025922732.0x000042