RT Journal Article SR Electronic T1 Self report and GIS based modelling as indicators of air pollution exposure: is there a gold standard? JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 508 OP 509 DO 10.1136/oem.2005.020560 VO 62 IS 8 A1 F Forastiere A1 C Galassi YR 2005 UL http://oem.bmj.com/content/62/8/508.abstract AB