RT Journal Article SR Electronic T1 On the approach for calculating occupational exposure limits for diesel motor exhaust: authors’ response JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP oemed-2017-104759 DO 10.1136/oemed-2017-104759 A1 Roel Vermeulen A1 Lützen Portengen YR 2017 UL http://oem.bmj.com/content/early/2017/09/26/oemed-2017-104759.abstract AB