Keelawat, Somboon
Bychkov, Andrey http://orcid.org/0000-0002-4203-5696
Article History
Received: 5 January 2019
Accepted: 28 January 2019
First Online: 7 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments. This study was approved by the Institutional Review Board of the Faculty of Medicine, Chulalongkorn University (IRB No. 652/59).
: Informed consent was obtained from all individual participants included in the study.