- Correspondence to Dr Chayatat Ruangkit, Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samut Prakan 10540, Thailand;
- Received September 27, 2017
- Revised October 27, 2017
- Accepted November 7, 2017
- First published November 25, 2017.
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