*Psychological Tests
        Wellens, Nathalie I. H., Deschodt, Mieke, Flamaing, Johan, Moons, Philip, Boonen, Steven, Boman, Xavier, Gosset, Christiane, Petermans, Jean, Milisen, Koen 2011. First-generation versus third-generation comprehensive geriatric assessment instruments in the acute hospital setting: a comparison of the Minimum Geriatric Screening Tools (MGST) and the interRAI Acute Care (interRAI AC). The journal of nutrition, health & aging.  15 (8) 638-44.  
          Perlman, Christopher M, Hirdes, John P 2008. The aggressive behavior scale: a new scale to measure aggression based on the minimum data set. Journal of the American Geriatrics Society.  56 (12) 2298-303.  
          Hamilton, M. 1967. Development of a rating scale for primary depressive illness. Br J Soc Clin Psychol.  6 (4) 278-96.