Affiliation: | 1. Department of Laboratory Medicine, Gyeongsang National University Hospital, , Jinju, Korea;2. Department of Obstetrics and Gynecology, Boramae Hospital, , Seoul, Korea;3. Department of Laboratory Medicine, Seoul National University College of Medicine, , Seoul, Korea;4. Seoul Metropolitan Government Public Cord Blood Bank (Allcord), , Seoul, Korea;5. Department of Laboratory Medicine, Boramae Hospital, , Seoul, Korea |