O-Prasertsawat, P., Sapmadee, S., Suthutvoravut, S., & Chaturachinda, K. (1992). Relationship Between Time of Birth and Perinatal Death Ramathibodi Hospital : 1981 - 1989. Thai Journal of Obstetrics and Gynaecology, 4(2), 85–88. retrieved from https://he02.tci-thaijo.org/index.php/tjog/article/view/257828