Vijitpavan, A., A. Saelao, B. Purintrapiban, W. Kingsakul, and W. Pootongngen. “Comparison of C-MAC D-Blade videolaryngoscope with conventional blind technique for transesophageal echocardiography probe insertion”. Thai Journal of Anesthesiology, vol. 41, no. 3, June 2016, pp. 179-88, https://he02.tci-thaijo.org/index.php/anesthai/article/view/58701.