1. Department of Urology; University of California San Diego; San Diego California USA
2. Department of Urology; University of Minnesota; Minneapolis Minnesota USA
3. Urology Section; Minneapolis VA Health Care System; Minneapolis Minnesota USA
4. Department of Urology; Chonnam National University Medical School, Chonnam National University Hwasun Hospital; Hwasun Korea, South
5. Department of Urology; Yonsei University Wonju College of Medicine; Wonju Korea, South
6. Center of Evidence-Based Medicine, Institute of Convergence Science; Yonsei University; Seoul Korea, South
7. University of Florida Health Science Center Libraries; University of Florida; Gainesville Florida USA
8. Department of Urology; University of Michigan; Ann Arbor Michigan USA