Narita, Zui, and Keiko Ueda. “Site-Based Online Distance Learning in Japan: A Preliminary Study of Four years’ Experience”. Principles and Practice of Clinical Research 6, no. 2 (June 9, 2020): 1–5. Accessed April 5, 2025. https://journal2.teste.pro.br/index.php/ppcrjournal/article/view/56.