ขุนดำ วิไลวรรณ. 2019. “The study of complication of thyroid surgery among patients at Sichon Hospital, Nakhon Si Thammarat”. Region 11 Medical Journal 32 (4):1315-26. https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/176433.