1. ‘Walking-stick ureters’ in ketamine abuse
Po-Wei Huang, En Meng, Tai-Lung Cha, Guang-Huan Sun, Dah-Shyong Yu, Sun-Yran Chang 
Kidney International 
Volume 80, Issue 8, (October 2011)
DOI: /ki
Copyright © 2011 International Society of Nephrology Terms and Conditions

2. Figure 1
Retrograde pyelography showing bilateral hydronephrosis and ureteral strictures with segmental beading (arrows) and straightening of both ureters.
Kidney International  , DOI: ( /ki )
Copyright © 2011 International Society of Nephrology Terms and Conditions