2. BACKGROUND AND THEORETICAL FOUNDATIONS
The availability of medical data is of utmost importance to physicians during the medical service delivery [42][42]. The healthcare sector can further profit from modern data analysis techniques. Their application fields in the healthcare area range from disease detection, disease outbreak prediction, and choice of a therapy to useful information extraction from doctors’ free-note clinical notes, and medical data gathering and organizing [21]. These techniques can also be applied to assessment of plausibility and performance of medical services and medical therapies development [7]. Recently, [32] introduced an interactive three-dimensional e-learning portal for novice surgeons. Under real time conditions, their surgical procedures are to be compared to the practice of experienced surgeons. [30] presented a decision support system aimed to assist physicians in finding a successful treatment for some certain illness based on the currently available best practices and the characteristics of a given patient.