Janu , Pensri. 2018. “The Effects of VDO Media Usage for Pre-Operative Preparation on the Knowledge and Satisfaction of Patients Same Day Surgery at Ear Throat Nose Operating Room, Thammasat University Hospital”. Thammasat University Hospital Journal Online 3 (3). Pathum Thani, Thailand:47-65. https://he02.tci-thaijo.org/index.php/TUHJ/article/view/240296.