Laohavich, C., S. Choothakan, and B. Tiparaj. “Effect of Educational Information With Video Compact Disc on Anxiety Level of Patients Undergoing Bronchoscopy”. Ramathibodi Nursing Journal, vol. 23, no. 2, Oct. 2017, pp. 195-07, https://he02.tci-thaijo.org/index.php/RNJ/article/view/102584.