TY - GEN AU - Park,Sook-Hyun AU - Lee,Gi-Min AU - Moon,Jung-Eun AU - Kim,Heng-Mi TI - Severe vitamin D deficiency in preterm infants: maternal and neonatal clinical features SN - 1738-1061 PY - 2015///1222 N1 - Publication Type: Journal Article UR - https://doi.org/10.3345/kjp.2015.58.11.427 ER -