The pursue-up questionnaires (2001–2004) got a mean lifetime of 20 minutes accomplish Interviews were presented over the telephone (CATI, converso) from the instructed interviewers. To…
The pursue-up questionnaires (2001–2004) got a mean lifetime of 20 minutes accomplish Interviews were presented over the telephone (CATI, converso) from the instructed interviewers. To…