1. Adams N, Rowe JC. Nephrocalcinosis. Clin Perinatol 1992; 19: 179-95.

2. Lslovis TL, Berstein J, Gruskin A. Hyperechoie kidneys in the newborn and young infant. Ped Nephrol 1993; 7: 294-302.

3. Short A, Cooke RW. The incidence of renal calcification in preterm infants. Arch Dis Child 1991; 66: 412-7.

4. Shultz P, Strife JL, Strife CF, McDaniel JD. Hyperechoic renal medullary pyramids in infants and and children. Ped Rad 1991; 181: 163-7.

5. Downing G, Egelhoff JC, Daily DK, Thomas M, Alon U. Kidney function in very low birth weight infant with furosemide. Related renal calcifications at ages 1 to 2 years. J Pediatr 1992; 120: 599-604.

6. Katz M, Karlowicz M, Adelman RD, Werner A, Solhaug MJ. Nephrocalcinosis in very low birth weight neonates: sonographic patterns, histological characteristics and clinical risk factors. J Ultrasound Med 1994; 13: 777-83.

7. Downing G, Egelhoff JC, Daily DK, Alon U. Furosemide related renal calcifications in the premature infant. Ped Rad 1991; 21: 563-5.

8. Karlowicz MG, Adelman RD. Calcificaciones renales en el primer año de vida. Pediatr Clin North Am 1995; 6: 1313-28.

9. Pope JC, Trusler L, Klein AM, Walsh W, Yared A, Brock JW. The natural history of nephrocalcinosis in premature infants treated with loop diuretics. J Urol 1996; 156: 709-12.

10. Saarela T, Lanning P, Koivisto M. Prematurity associated nephrocalcinosis and kidney function in eariy chilhood. Ped Nephrol 1999; 13: 886-90.

11. Saarela T, Vaarala A, Lanning P, Koivisto M. Incidence, ultrasonic patterns and resolution of nephrocalcinosis in very low birthweight infants. Acta Paediatr 1999; 88: 655-60.

12. Campfield T, Bednarek FJ, Pappagallo M, Hampf F, Ziewacs J. Nephrocalcinosis in premature infants: varibility in ultrasound detection. J Perinatol 1999; 19: 498-500.

13. Campfield T, Braden G, Flynn-Valone P, Powell S. Effect of diuretics on urinary oxalate, calcium and sodium excretion in very low birth weight infants. Pediatrics 1997; 99: 814-8.

14. Alon US. Nephrocalcinosis. Curr Opin Pediatr 1997; 9: 160-5.

15. Zanardo V, Dani C, Trevisanuto D, Meneghetti S, Guglielmi A, Zacchello G. Methylxanthines increase renal calcium excretion in preterm infants. Biol Neonate 1995; 68:169-74.

16. Navarro O, Danaman A, Kooh SW. Asymmetric medullary nephrocalcinosis two children. Pediatr Radiol 1998; 28: 687-90.

17. Alon US, Kaplan R, Gratny L, Nichols MA. Histological long-term outcome of furosemide induced nephrocalcinosis in rat. Pediatr Nephrol 1996; 10: 191-4.