Keonkaew, B., Hanpanich, P., & Shinkhamharn, P. (2013). AN INVENTION OF ACCESSORY DEVICE FOR PARANASAL SINUSES RADIOGRAPHY. Srinagarind Medical Journal, 21(4), 260–266. Retrieved from https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13666