From the *Department of Nuclear Medicine, and †Department of Urology, Urological Science Institute, Severance Hospital, and ‡Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea.
Received for publication October 9, 2016; revision accepted January 15, 2017.
Conflicts of interest and sources of funding: This study was supported by a National Research Foundation of Korea Grant funded by the Korean Government (no. 2012027176) and the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education (2016R1D1A1A02937210). None declared to all authors.
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 Declaration of Helsinki and its later amendments or comparable ethical standards.
The institutional review board of our university approved this retrospective study, and the requirement to obtain informed consent was waived (institutional review board 4-2015-0953).
Correspondence to: Won Jun Kang, MD, PhD, Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea. E-mail: [email protected].
