. 2006 Mar 30;21(1):28–32. doi: 10.3904/kjim.2006.21.1.28
Copyright © 2006 The Korean Association of Internal 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.
Table 1.
Demographic characteristics of patients
M, male; F, female