Phuwayanon, Sirintip -, Tipawan Daramas, and Renu Pookboonmee. 2017. “Effects of Oral Sucrose Solution for Pain Relief in Premature Infants During Tracheal Suction”. Nursing Research and Innovation Journal 22 (2):134-48. https://he02.tci-thaijo.org/index.php/RNJ/article/view/43334.