Yoon, Hye Eun
Kim, Yaeni
Shin, Seok Joon
Hong, Yeon Sik
Kang, Kwi Young
Funding for this research was provided by:
National Research Foundation of Korea (2014R1A1A1006695, 2014R1A1A3A04050919)
Article History
Received: 12 February 2018
Accepted: 23 May 2018
First Online: 28 June 2018
Compliance with ethical standards
:
: The authors have no competing interests to declare.
: For this type of study, formal consent is not required.
: The study was approved by the ethics committee at Incheon Saint Mary’s Hospital (OC16TISI0057), and conducted in accordance with the principles of the Declaration of Helsinki.