Table 6. Identified publications by year.
| Year | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of publication | 2 | 3 | 6 | 6 | 6 | 2 | 6 | 7 | 10 | 12 | 7 | 67 |
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