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. 13, 3 (Apr. 2001), 75–78.