Santos, I., Botelho, A., Borges, A., Capela, A., Nora, D., Marques, F., Frazão, G., Bogalho, I., Queirós, M.J., Alfarroba, S. and Libório, T. 2009. Co-morbidity and functionality: observational study of a cohort of patients. Acta Médica Portuguesa. 22, 6 (Dec. 2009), 779–88. DOI:https://doi.org/10.20344/amp.1732.