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Boertien, Jeffrey M., Sygrid van der Zee, Asterios Chrysou, Marleen J. J. Gerritsen, Nomdo M. Jansonius, Jacoba M. Spikman, και Teus van Laar. "Study Protocol of the DUtch PARkinson Cohort (DUPARC): A Prospective, Observational Study of De Novo Parkinson’s Disease Patients for the Identification and Validation of Biomarkers for Parkinson’s Disease Subtypes, Progression and Pathophysiology." BMC Neurol 2020.

Boertien, Jeffrey M., et al. "Study Protocol of the DUtch PARkinson Cohort (DUPARC): A Prospective, Observational Study of De Novo Parkinson’s Disease Patients for the Identification and Validation of Biomarkers for Parkinson’s Disease Subtypes, Progression and Pathophysiology." BMC Neurol 2020.