BIRRER, D. L.; WIDMER, L. W.; TANNO, L.; SCHNEIDER, R.; DIRNBERGER, A.; WILHELM, A.; ZINGG, U.; MÜLLER, B.; MEULI, L.; KUEMMERLI, C. Evaluation and testing of the proportional hazards assumption in analysis of time-to-event data in subgroup analysis of randomised controlled trials: a meta-epidemiological study. Swiss Medical Weekly, [S. l.], v. 155, n. 1, p. 4022, 2025. DOI: 10.57187/s.4022. Disponível em: https://smw.ch/index.php/smw/article/view/4022. Acesso em: 18 feb. 2025.