Chanrachakul, B., Siriwattanachoke, U. and Phuapradit, W. (2001) “Attitude of pregnant women attending Ramathibodi Hospital toward the ‘Ramathibodi Placental Utilization Project (Rama PUP)’”, Thai Journal of Obstetrics and Gynaecology. Bangkok, Thailand, 13(3), pp. 75–78. available at: https://he02.tci-thaijo.org/index.php/tjog/article/view/256549 (accessed: 29 September 2026).