ลี้ทอง พ. “The Necessity of Carbapenems therapy for covering Extended spectrum Beta-lactamase inhibitor producing organisms in Community Acquired Intra-abdominal infection in Samutprakarn Hospital”. Region 11 Medical Journal, vol. 29, no. 1, Mar. 2015, pp. 131-6, https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/180648.