Do Papers with Japanese Authors Have a Different Number of Authors? A Follow-Up Study after 25 Years and Implication for Other Countries

A follow-up study was conducted 25 years after the 1997 British Medical Journal report. Articles with at least one Japanese author were defined as ‘Article by Japanese’ and those no authors Non-Japanese’. The number of per article for 2000, 2010, 2020 in Circulation, Circulation Research, studied. Results are: (1) In all journals covered, had more than Twenty-five later, results similar. (2) Comparison year revealed that showed increases time article. We have discussed problem Science Council Japan’s statement, influence on practising physicians sample providers, international collaborations. This 25-year highlights once again need global discussions qualifications authorship research studies.