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

Year Number of Results
1981 2
1982 1
1983 1
1987 1
1988 1
1990 1
1991 3
1992 1
1993 3
1994 1
1995 4
1996 6
1997 12
1998 8
1999 11
2000 14
2001 7
2002 9
2003 9
2004 9
2005 8
2006 5
2007 9
2008 5
2009 7
2010 9
2011 11
2012 11
2013 16
2014 16
2015 9
2016 4
2017 4
2018 6
2019 8
2020 13
2021 6
Text availability
Article attribute
Article type
Publication date

Similar articles for PMID: 21807694

231 results
Results by year
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231 results
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