Motivation and frustration in cardiology trial participation: the patient perspective. Clinics, [S. l.], v. 67, n. 6, p. 603–608, 2012. DOI: 10.6061/clinics/2012(06)10. Disponível em: https://revistas.usp.br/clinics/article/view/40014.. Acesso em: 11 may. 2024.