Объяснение:
1- how many people was examined?
2- how its callen?
3- how is important?
ответ
1. How many people were examined?
2. How else is it called?
3. Why is it important?
4. How does it work?
5. What's the use of it?
6. Is it important to everyone?
7. Can some factors increase the risk of me having it?