* 1. What kind of unit do you work in?

* 2. Which of the following facilities are available in your hospital for children in their first two years of life? (more than one answer is possible)

* 3. Which of the following definitions represent a typical diagnosis of renal dysplasia in your opinion? (more than one answer is possible)

* 4. Is the presence of small kidneys necessary for the diagnosis of dysplasia?

* 5. Is the presence of hyperechogenicity necessary for the diagnosis of dysplasia?

* 6. When would you recommend further imaging in children with a diagnosis of renal dysplasia within the first year of life? (more than one answer is possible)

* 7. What further imaging would you suggest? (more than one answer is possible)

* 8. In a child with bilateral renal dysplasia would you suggest sonographic screening of the first degree relatives?

* 9. In a child with unilateral renal dysplasia would you suggest sonographic screening of the first degree relatives?

* 10. In a child with unilateral renal dysplasia would you suggest genetic screening?

* 11. In a child with bilateral renal dysplasia would you suggest genetic screening?

* 12. In a child with unilateral cystic renal dysplasia would you suggest genetic screening?

* 13. In a family with bilateral cystic renal dysplasia would you suggest genetic screening?

* 14. Which genes would you screen in a family with bilateral renal dysplasia and other urologic anomalies and or extrarenal manifestations?

* 15. What country do you work in?

T