Tummarintra, Paiboon, Panop Limratana, Kittiphong Sujirattanawimol, and Chatchawan Srisawat. “The Contamination of Intravenous Fluid by Felt-Tip Marking Pen Ink: A Pilot Study”. Siriraj Medical Journal 70, no. 4 (November 7, 2018): 349–354. Accessed May 3, 2024. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/153939.