Pinmuang-ngam, Charnchai, Suwanna Rakkanpat, Suwanna Rakkanpat, and Piyawan Suwattanarut. “The Effects of Early Oral Feeding Protocol on Postcesarean Gastrointestinal Functions”. Thai Journal of Obstetrics and Gynaecology 12, no. 3 (July 1, 2000): 189–194. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/256783.