Designing and conducting observational studies in rehabilitation: challenges and opportunities. Principles and Practice of Clinical Research, [S. l.], v. 7, n. 3, p. 50–53, 2021. DOI: 10.21801/ppcrj.2021.73.7. Disponível em: https://journal.ppcr.org/index.php/ppcrjournal/article/view/180.. Acesso em: 14 jul. 2024.