PEDROSA, Ivanilda Lacerda et al. Characteristics and Prognostic Factors of Elderly Patients in Intensive Care Unit. International Archives of Medicine, [S.l.], v. 8, oct. 2015. ISSN 1755-7682. Available at: <http://imed.pub/ojs/index.php/iam/article/view/1345>. Date accessed: 09 july 2020. doi: http://dx.doi.org/10.3823/1842.