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. 2018 Jun 19;19:1482–1489. doi: 10.1016/j.dib.2018.06.017

Table 4.

Number of samples in years studied (2003–2013).

Year Number of samples
2003 42
2004 41
2005 43
2006 42
2007 40
2008 39
2009 34
2010 80
2011 37
2012 36
2013 26