- Correspondence to Dr Yoshiaki Sato, Division of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital, 65 Tsurumai-cho Showa-ku, Nagoya 466-8560, Japan;
- Received June 11, 2016
- Revised May 30, 2017
- Accepted June 7, 2017
- First published July 19, 2017.
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