Funding for this research was provided by:
Ministry of Trade, Industry and Energy (No. 10049411)
Text and Data Mining valid from 2019-05-26
Received: 28 February 2019
Accepted: 17 May 2019
First Online: 26 May 2019
Compliance with ethical standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Eulji university research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Authors H. Yeom and S. Park declare that they have no conflict of interest. Author C. H. Park provided photos for the manuscript and declares that he has no conflict of interest.
: Informed consent was obtained from both the patient interviewed and his personal carer.