Leonidou, Andreas Lepetsos, Panagiotis Kenanidis, Eustathios and Macheras, George Tzetis, Maria Potoupnis, Michael Tsiridis, Eleftherios, Association of Polymorphisms in the Promoter Region of NOS2A Gene with Primary Knee Osteoarthritis in the Greek Population, CUREUS, (12), 2020, CUREUS INC,