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

Year Number of Results
1950 2
1951 1
1954 3
1956 3
1957 2
1959 1
1961 1
1965 1
1973 1
1993 1
1999 2
2001 1
2002 1
2003 1
2004 1
2005 1
2006 2
2007 7
2008 4
2009 7
2010 6
2011 9
2012 11
2013 12
2014 18
2015 20
2016 16
2017 16
2018 15
2019 16
2020 11
2021 6
Text availability
Article attribute
Article type
Publication date

Similar articles for PMID: 23721899

168 results
Results by year
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168 results
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