Lee, C. K.
Choi, S. K.
Shin, D. A.
Yi, S.
Kim, K. N.
Kim, I.
Ha, Y.
Article History
Received: 29 September 2017
Accepted: 24 January 2018
First Online: 19 February 2018
Compliance with ethical standards
: This population-based, case-control study was approved by the Institutional Review Board of Yonsei University Severance Hospital (4-2017-0725).
: None.