Ali Montazeri, Iranian Institute for Health Sciences Research, ACECR
14 December 2011
This is just to notify the readers that in Table 1 the number of 'Housewife' is 140 and for 'Education' there were 12 missing records. We are sorry that we could not indicate these in pre-publication checking process.
Correction for Table 1
14 December 2011
This is just to notify the readers that in Table 1 the number of 'Housewife' is 140 and for 'Education' there were 12 missing records. We are sorry that we could not indicate these in pre-publication checking process.
Competing interests
None.