Figure A1
A bar graph compares the number of studies per year in a corpus, with bars representing publications by Barrena et al. in orange and total publications excluding Barrena et al. in gray. The horizontal axis represents the years from 2000 to 2024, and the vertical axis represents the number of publications, ranging from 0 to 12. The graph shows a fluctuating trend in the number of publications over the years. Notable peaks in total publications occur in 2016, 2017, and 2018. Publications by Barrena et al. are concentrated between 2009 and 2015, with the highest number in 2013. The graph indicates that excluding Barrena et al.'s publications results in a plateau in the number of studies between 2011 and 2015 rather than a gradual increase.Number of studies per year in the corpus by Barrena et al. and excluding Barrena et al.