CLINICAL CONFERENCE ON CHRONIC KIDNEY DISEASE, SPECIALLY CHRONIC KIDNEY DISEASE IN CHILDREN AND RENAL LITHIASIS 3 NATIONAL COURSES: 1. CHRONIC KIDNEY DISEASE IN CHILDREN -PROFESSOR MIHAELA BALGRADEAN 2. MANAGEMENT OF NEPHROLITHIASIS-AN UPDATE-MDPH GIANINA GABRIELA SOTILA 3. CHALLENGES IN ENDOUROLOGY- MDPH RAZVAN MULTESCU