RT Journal Article SR Electronic T1 Vaccinating welders against pneumonia JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 932 OP 932 DO 10.1136/oemed-2012-101057 VO 69 IS 12 A1 Keith T Palmer A1 Martin Cosgrove YR 2012 UL http://oem.bmj.com/content/69/12/932.1.abstract AB