da Cunha CSC, Bittar OJNV, Tess BH. Federal university hospitals: heterogeneity in the coordination of clinical trials authorized by the National Health Surveillance Agency. Clin Biomed Res [Internet]. 3º de fevereiro de 2021 [citado 22º de agosto de 2026];40(2). Disponível em: https://seer.ufrgs.br/index.php/hcpa/article/view/98431