Mousavi-Bahar, S. H., Ahanian, A. and Borzouei, B. (2012) “Needle Manipulation for Removing Inaccessible Stones in Parallel Calices during Percutaneous Nephrolithotomy”, Urology Journal, 9(2), pp. 522–524. doi: 10.22037/uj.v9i2.1481.