doctor
-3
|
not applicable
de
|
| -2
|
don't know/invalid
de
|
| -1
|
Refuse
de
|
| 1
|
Never
de
|
| 2
|
3 months
de
|
| 3
|
6 months
de
|
| 4
|
1 year
de
|
| 5
|
2 years
de
|
| 6
|
5 years
de
|
| 7
|
10 years
de
|
| 8
|
More than 10 years
de
|
