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

Year Number of Results
1967 1
1969 2
1974 1
1975 1
1976 1
1979 2
1981 3
1982 2
1983 3
1984 4
1985 3
1986 5
1987 6
1988 6
1989 12
1990 16
1991 13
1992 20
1993 28
1994 28
1995 21
1996 24
1997 30
1998 9
1999 16
2000 17
2001 13
2002 11
2003 10
2004 13
2005 6
2006 5
2007 12
2008 7
2009 5
2010 7
2011 8
2012 4
2013 4
2014 8
2015 6
2016 4
2017 1
2018 3
2019 4
2020 1
2021 0
Text availability
Article attribute
Article type
Publication date

Similar articles for PMID: 9402091

396 results
Results by year
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