Chotiyarnwong, Pojchong http://orcid.org/0000-0002-0287-222X
Boonnasa, Wararat
Chotiyarnwong, Chayaporn http://orcid.org/0000-0002-5622-9811
Unnanuntana, Aasis http://orcid.org/0000-0002-5742-298X
Article History
Received: 9 December 2019
Accepted: 14 February 2020
First Online: 6 March 2020
Compliance with ethical standards
:
: All authors report no conflict of interests.
: Each author certifies that his/her institution approved the human protocol for this investigation, and that all investigations were conducted in conformity with ethical principles of research. The study protocol, questionnaire, and consent forms used in this prospective randomized controlled trial (RCT) were approved by the Siriraj Institutional Review Board (SIRB) of the Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand (COA no. Si 290/2017).
: All procedures performed in this study involving human participants were and will be in accordance with the ethical standards of the institutional and/or national research committee (Siriraj Institutaional Review Board of the Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand (COA no Si 290/2017) and the Thai Clinial Trials Registry (reg. no 20170623005) and with the 1964 Helsinki declaration. This article does not contain any studies with animal performed by any of the authors.
: For each participant, verbal information was given on the aims of the study and the implications of taking part, and a consent form was read aloud. Participants were also given the opportunity to ask questions. Consent was then obtained by signature.