KRUEGER, K. J.; RAHMAN, F.; SHEN, Q.; HIEBERT, J. B.; PIERCE, J. D. Clinical trial visits in the age of COVID-19: implementation of research participant safety measures. International Journal of Clinical Trials, [S. l.], v. 8, n. 2, p. 167–173, 2021. DOI: 10.18203/2349-3259.ijct20211466. Disponível em: https://www.ijclinicaltrials.com/index.php/ijct/article/view/462. Acesso em: 22 feb. 2026.