S. Theerapongpakdee, W. Chau-In, P. Bunsangcharoen, S. Chanthawong, and A. Wittayapairoj, “The new Srinagarind Endotracheal & Esophageal Detecting (SEED) device: how to make, test and use it in Anesthetic Practice”, Thai J Anesthesiol, vol. 41, no. 1, pp. 41–46, Jun. 2016.