RT Journal Article SR Electronic T1 A cross sectional study of the independent effect of occupation on lung function in British coal miners. JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 575 OP 576 DO 10.1136/oem.53.8.575-b VO 53 IS 8 A1 A Seaton YR 1996 UL http://oem.bmj.com/content/53/8/575.3.abstract AB