ปันทะ ป., and เตชะเคหะกิจ ว. “The prevalence of and factors associated with inappropriate metformin prescription in type 2 DM patients with contraindications: a case study in Thailand”. Region 11 Medical Journal, vol. 33, no. 1, Mar. 2019, pp. 131-40, https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/188375.