Carnide F, Moniz-Pereira V, Ramalho F, Machado M, André H, Santos-Rocha R, Veloso AP. (2014). Functional Impairment in Community-Dwelling Older Adults: The Role of Health, Falls, and Physical Activity. The Gerontologist, 54 (6): S290 URL:http://gerontologist.oxfordjournals.org/content/54/Suppl_2.toc