Altinayar, Sibel, Feriha Ozer, Yusuf Turkoz, Handan Isin Ozisik, Sibel Cetin, Eyup Altinoz, and Cemal Ozcan. 2021. “Effect Of L-Deprenyl On Nitric Oxide Metabolites In Parkinson’s Disease Patients ”. Annals of Medical Research 12 (3): 0185-88. http://www.annalsmedres.org/index.php/aomr/article/view/3114.