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

Peer Review reports

Original Submission
18 Dec 2019	Submitted	Original manuscript
27 Jan 2020	Reviewed	Reviewer Report
7 Apr 2020	Reviewed	Reviewer Report - Mark Frasier
1 May 2020	Author responded	Author comments - Jeffrey Michel Boertien
11 May 2020	Reviewed	Reviewer Report
20 May 2020	Reviewed	Reviewer Report - Mark Frasier
27 May 2020	Author responded	Author comments - Jeffrey Michel Boertien
Resubmission - Version 2
1 May 2020	Submitted	Manuscript version 2
Publishing
28 May 2020	Editorially accepted
13 Jun 2020	Article published	10.1186/s12883-020-01811-3

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