RT Journal Article SR Electronic T1 Letter commentary on: Lung cancer mortality in the French cohort of titanium dioxide workers: some aetiological insights JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 303 OP 303 DO 10.1136/oemed-2020-107280 VO 78 IS 4 A1 John Andrew Tomenson YR 2021 UL http://oem.bmj.com/content/78/4/303.abstract AB