Limratana P, Sujirattanawimol K. The contamination of intravenous fluid by felt - tip marking pen ink: a pilot study. Thai J Anesthesiol [internet]. 2016 Jun. 20 [cited 2026 Sep. 28];40(3):141-2. available from: https://he02.tci-thaijo.org/index.php/anesthai/article/view/59163