1Department of Internal Medicine, Daegu Fatima Hospital, Daegu, Korea
2Department of Radiology, Daegu Fatima Hospital, Daegu, Korea
Copyright © 2016 The Korean Society of Critical Care Medicine
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.