Kalaya Maneechot และ Sathirakorn Pongpanich. (2003) Risk factors associating with birth asphyxia in newborn at Maharaj Nakhon Si Thammarat Hospital. Chulalongkorn University:ม.ป.ท.Kalaya Maneechot และ Sathirakorn Pongpanich. 2003. Risk factors associating with birth asphyxia in newborn at Maharaj Nakhon Si Thammarat Hospital. ม.ป.ท.:Chulalongkorn University;Kalaya Maneechot และ Sathirakorn Pongpanich. Risk factors associating with birth asphyxia in newborn at Maharaj Nakhon Si Thammarat Hospital. ม.ป.ท.:Chulalongkorn University, 2003. Print.