O-Prasertsawat P, Sapmadee S, Suthutvoravut S, Chaturachinda K. Relationship Between Time of Birth and Perinatal Death Ramathibodi Hospital : 1981 - 1989. Thai J Obstet Gynaecol [internet]. 1992 Jul. 1 [cited 2026 Sep. 29];4(2):85-8. available from: https://he02.tci-thaijo.org/index.php/tjog/article/view/257828