Panupong Ngamthong และ Dittakarn Boriboonhirunsarn. (2023) Cesarean Section Rate and Associated Risk Factors in Group 1 Robson Classification. <i>Thai Journal of Obstetrics and Gynaecology</i>, <i>31</i>(1), 11-20.Panupong Ngamthong และ Dittakarn Boriboonhirunsarn. "Cesarean Section Rate and Associated Risk Factors in Group 1 Robson Classification". Thai Journal of Obstetrics and Gynaecology 31 (2023):11-20.Panupong Ngamthong และ Dittakarn Boriboonhirunsarn. Cesarean Section Rate and Associated Risk Factors in Group 1 Robson Classification. PIMDEE Co. Ltd.:ม.ป.ท. 2023.