EFFICACY, SAFETY AND DIRECT COST OF TWO MINIMALLY INVASIVE TECHNIQUES FOR THE TREATMENT OF PROXIMAL URETERAL LITHIASIS: A PROSPECTIVE AND COMPARATIVE STUDY

1. Lujan Marco, S.
2. Di Capua, C.
3. Bahilo, P.
4. Budia, A.
5. Broseta, E.
6. Boronat, F.
7. Jimenez-Cruz, J. F.