Hyun, Hye Sun
Kim, Ji Hye
Cho, Myung Hyun
Park, Eujin
Ha, Il-Soo
Cheong, Hae Il
Kang, Hee Gyung
Article History
Received: 3 January 2019
Revised: 30 May 2019
Accepted: 20 June 2019
First Online: 4 July 2019
Compliance with ethical standards
: This study was approved by the hospital’s institutional review boards (IRB C-1703-067-839).
: The authors declare that they have no conflict of interest.