Lee, Kwang Suk
Koo, Kyo Chul
Chung, Byung Ha
Funding for this research was provided by:
Korean Society for Urologic Ultrasonography (2016-00)
Article History
Received: 5 September 2017
Accepted: 2 February 2018
First Online: 5 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by our institutional review board. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required. This article does not contain any studies with animals performed by any of the authors.