Thanos Chatzikostopoulos; Magdalini Tsolaki; Greta Wozniak; Emmanouela Basgiouraki; Iordanis Saoulidis; Dimitrios Michmizos. The Effects of Early-Harvest Extra Virgin Olive Oil on Cognition And Mental Health of Primary (PPMS) or Secondary (SPMS) Progressive Multiple Sclerosis Patients. GJMR 2022, 22, 45-52.