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

Year Number of Results
1974 1
1999 1
2004 4
2006 6
2007 7
2008 16
2009 6
2010 9
2011 10
2012 13
2013 11
2014 14
2015 6
2016 7
2017 10
2018 7
2019 9
2020 11
2021 15
2022 17
Text availability
Article attribute
Article type
Publication date

Similar articles for PMID: 21788844

162 results
Results by year
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162 results