Renal lithiasis in pediatric patients: correlation of methods that depend on 24-hour collections with simpler methods that do not require timed urine

1. Ubetagoyena Arrieta, M.
2. Areses Trapote, R.
3. Mendia Ubetagoyena, J.
4. Pérez Revuelta, M.S.
5. Letona Luqui, M.