Korean J Urol 2013;54:36-41. doi: 10.4111/kju.2013.54.1.36
In this paper, acknowledgments section was omitted unintentionally. The authors sincerely regret this error. The text should be as follows:
ACKNOWLEDGMENTS
This study was supported by a faculty research grant of Yonsei University College of Medicine for 2010 (6-2010-0113).