RT Journal Article SR Electronic T1 Economic evaluation of occupational health services: necessary, challenging and promising JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP oemed-2017-104495 DO 10.1136/oemed-2017-104495 A1 Jeroen Luyten A1 Jonas Steel A1 Lode Godderis YR 2017 UL http://oem.bmj.com/content/early/2017/09/12/oemed-2017-104495.abstract AB