The traditional disease-oriented model of medicine focuses on the theory that organ- or system-based pathologies cause disease and, thus, treatment is focused on eliminating the underlying pathology. However, the disease model does not account for complexity of patients that are more often being seen in modern medical settings [1]. Due to increasing life expectancy, health care systems are progressively facing growing populations of older patients, who often have non-disease specific problems such as multimorbidity, frailty, polypharmacy, and disability [2,3].
