Association Among SNAP-25 Gene DdeI and MnlI Polymorphisms and Hemodynamic Changes During Methylphenidate Use: A Functional Near-Infrared Spectroscopy Study Özgür Öner, Ata Akın, Hasan Herken, Mehmet Emin Erdal, Koray Çiftçi, Mustafa Ertan Ay, Duygu Bicer, Bedriye Öncü, Ozlem Hekim Bozkurt,…