HoloPrognosis - An AR-Based Serious Exercise Game for Early Stage Parkinson's Disease Patients. - Marios Thomos; Vasileios S. Charisis; Stelios Hadjidimitriou; Dimitrios Iakovakis; Sevasti Bostantzopoulou; Leontios J. Hadjileontiadis (HCI (8), 2020)