Site-based online distance learning in Japan: a preliminary study of four years’ experience. Principles and Practice of Clinical Research, [S. l.], v. 6, n. 2, p. 1–5, 2020. DOI: 10.21801/ppcrj.2020.62.1. Disponível em: https://journal.ppcr.org/index.php/ppcrjournal/article/view/56.. Acesso em: 14 apr. 2025.