Inphum, Panjai. 2018. “A comparison study of 2 mg versus 4 mg of dexamethasone combined with local anesthetic drug in increasing the analgesic duration of a single-shot supraclavicular brachial plexus block”. Thai Journal of Anesthesiology 43 (4):307-15. https://he02.tci-thaijo.org/index.php/anesthai/article/view/110601.