Pichai Vittayakittipong และ Thippapa Areewattana. (2022) Efficacy of Preemptive Ibuprofen Combined with Paracetamol in Lower Third Molar Surgery: A Double-blind Randomized Controlled Clinical Trial. <i>Chiang Mai Dental Journal</i>, <i>43</i>(1), 57-64.Pichai Vittayakittipong และ Thippapa Areewattana. "Efficacy of Preemptive Ibuprofen Combined with Paracetamol in Lower Third Molar Surgery: A Double-blind Randomized Controlled Clinical Trial". Chiang Mai Dental Journal 43 (2022):57-64.Pichai Vittayakittipong และ Thippapa Areewattana. Efficacy of Preemptive Ibuprofen Combined with Paracetamol in Lower Third Molar Surgery: A Double-blind Randomized Controlled Clinical Trial. Faculty of Dentistry, Chiang Mai University:ม.ป.ท. 2022.