Braak, Heiko; Del Tredici, Kelly (May 13, 2008). “Nervous system pathology in sporadic Parkinson disease”. Neurology (American Academy of Neurology) 70 (20): 1916 - 1925. doi:10.1212/01.wnl.0000312279.49272.9f. PMID18474848.
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pubmed.ncbi.nlm.nih.gov
Braak, Heiko; Del Tredici, Kelly (May 13, 2008). “Nervous system pathology in sporadic Parkinson disease”. Neurology (American Academy of Neurology) 70 (20): 1916 - 1925. doi:10.1212/01.wnl.0000312279.49272.9f. PMID18474848.