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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1980 3
1981 7
1982 9
1983 8
1984 9
1985 4
1986 6
1987 6
1988 12
1989 12
1990 10
1991 6
1992 1
2022 0
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93 results
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Page 1
Twin study of Parkinson disease.
Duvoisin RC, Eldridge R, Williams A, Nutt J, Calne D. Duvoisin RC, et al. Neurology. 1981 Jan;31(1):77-80. doi: 10.1212/wnl.31.1.77. Neurology. 1981. PMID: 7192828
The visual system in Parkinson's disease.
Bodis-Wollner I. Bodis-Wollner I. Res Publ Assoc Res Nerv Ment Dis. 1990;67:297-316. Res Publ Assoc Res Nerv Ment Dis. 1990. PMID: 2106154 Review. No abstract available.
93 results