ENGEL, C.; MEISNER, C.; WITTORF, A.; WÖLWER, W.; WIEDEMANN, G.; RING, C.; MUCHE, R.; KLINGBERG, S. Longitudinal Data Analysis of Symptom Score Trajectories Using Linear Mixed Models in a Clinical Trial. International Journal of Statistics in Medical Research, [S. l.], v. 2, n. 4, p. 305–315, 2013. DOI: 10.6000/1929-6029.2013.02.04.7. Disponível em: http://lifescienceglobalca.com/index.php/ijsmr/article/view/1330. Acesso em: 11 jan. 2025.