Atik, D., C. Atik, H. Karatepe, C. Karatepe, and S. Çınar. “The Effect on Anxiety Level of Coronary Angiographic Result and the Perception of Pain”. International Journal of Research in Medical Sciences, vol. 3, no. 2, Jan. 2017, pp. 391-8, https://www.msjonline.org/index.php/ijrms/article/view/1287.