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

Year Number of Results
1979 1
1980 1
1985 1
1988 3
1989 1
1991 2
1992 2
1993 2
1995 2
1996 3
1997 2
1998 4
1999 3
2000 15
2001 18
2002 13
2003 9
2004 11
2005 7
2006 7
2007 8
2008 7
2009 12
2010 17
2011 20
2012 27
2013 26
2014 35
2015 12
2016 27
2017 26
2018 20
2019 27
2020 21
2021 9
Text availability
Article attribute
Article type
Publication date

Similar articles for PMID: 21990574

346 results
Results by year
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