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

Year Number of Results
1984 1
1990 1
1992 2
1999 1
2001 4
2002 2
2003 3
2004 2
2005 2
2006 7
2007 27
2008 33
2009 122
2010 2
2011 6
2012 2
2013 1
2014 5
2015 3
2016 1
2017 1
2018 2
2020 3
2021 3
2022 0
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Publication date

Similar articles for PMID: 19668887

233 results
Results by year
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233 results