Mohammadzadeh,A , , Shah Farhat,A , , Balali,M , , Faal,G , , Iranpour,R , and Esmaieli,H . "Selenium Level of Umbilical Cord Blood: Is it related to Respiratory Distress Syndrome?", Iranian Journal of Neonatology, 3, 1, 2012, 24-30. doi: 10.22038/ijn.2012.277