RT Journal Article SR Electronic T1 Analysing health data from rare occupational cohorts JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 742 OP 743 DO 10.1136/oemed-2014-102298 VO 71 IS 11 A1 Bateson, Thomas F YR 2014 UL http://oem.bmj.com/content/71/11/742.abstract AB