E. Öztürk, MD, M. Zinnuroğlu, MD, Özer Ali Sezer, MD, İsmail Gökyar, MD, M. Beyazova, MD, and K. Kaya, MD, “Effects of perineural tramadol on sensory and motor conduction of ulnar nerve”, J of Opioid Management, vol. 4, no. 6, pp. 345–349, Jan. 2018.