Article History
Received: 20 October 2017
Accepted: 23 January 2018
First Online: 2 February 2018
Authors’ information
: Not applicable.
: The analyses in this report have been approved by the Ethical Clearance Committee on Human Rights Related to Research Involving Human Subjects, Faculty of Medicine, Ramathibodi Hospital, Mahidol University (MURA2016/457 N1).
: Not applicable.
: The authors declare that they have no competing interests.
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