1. "Grigore T. Popa" University of Medicine and Pharmacy, Department of Urology, 16 Universita.ii Street, 700115 Ia.i, Romania
2. "C.I. Parhon" Hospital, Department of Urology, "Michel Daudon" Center for Morphological and Spectroscopic Analysis of Urinary Stones, 50 Carol I Blvd., 700503 Ia.i, Romania