Fig. 1

Distribution of publications from Japanese urologists in 6 urology journals with post-graduate years during the year of article publication between 2010 and 2014. a First authors of all 529 articles, b corresponding authors of all 529 articles, c first authors of 187 articles in which the first and corresponding authors were different, d corresponding authors of 187 articles in which the first and corresponding authors were different, and e corresponding authors of 342 articles in which the first author served as the corresponding author