title: Commentary: Estimating the undeniable, not denying the immeasurable.
authors.affiliation: Public Health Wales Observatory, Public Health Wales NHS Trust, PO Box 108, Building 1, St David's Park, Job's Well Road, Carmarthen SA31 3WY, UK. gareth.davies9@wales.nhs.uk.
authors.forename: Gareth R
authors.initials: GR
authors.lastname: Davies