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Authors
Srivannaboon, Sabong
Chirapapaisan, Chareenun https://orcid.org/0000-0001-6560-9595
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Article History
Received: 31 March 2019
Revised: 10 August 2019
Accepted: 15 August 2019
First Online: 5 September 2019
Compliance with ethical standards
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: The first author has received a speaker honorarium from Company Carl Zeiss; the second author declares that she has no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Faculty of Medicine Siriraj Hospital, Mahidol University and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
