Park, J-L
Lee, Y-S
Song, M-J
Hong, S-H
Ahn, J-H
Seo, E-H
Shin, S-P
Lee, S-J
Johnson, B H
Stampfer, M R
Kim, H-P
Kim, S-Y
Lee, Y S
Article History
Received: 5 February 2017
Revised: 13 June 2017
Accepted: 3 July 2017
First Online: 28 August 2017
Competing interests
: The authors declare no conflict of interest.