Benjamat Hantanong. 2007. Incidence and risk factors of preterm delivery at Ramathibodi hospital : 2005-2006. Field of Study Human Reproduction and Population Planning, Mahidol University;
Benjamat Hantanong. (2007) Incidence and risk factors of preterm delivery at Ramathibodi hospital : 2005-2006 . Mahidol University/Bangkok.
Benjamat Hantanong. Incidence and risk factors of preterm delivery at Ramathibodi hospital : 2005-2006. . Bangkok:Mahidol University, 2007.
Benjamat Hantanong. (2007) Incidence and risk factors of preterm delivery at Ramathibodi hospital : 2005-2006 . Mahidol University/Bangkok.