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Authors
Chuaypen, Natthaya
Tuyapala, Nongnaput
Pinjaroen, Nutcha
Payungporn, Sunchai
Tangkijvanich, Pisit http://orcid.org/0000-0002-2926-8671
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Article History
Received: 6 December 2018
Accepted: 10 May 2019
First Online: 22 May 2019
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand. Written informed consent were obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
