title: Commentary: The use and misuse of life course models.
authors.affiliation: MRC Unit for Lifelong Health and Ageing at UCL, University College London, London, UK rebecca.hardy@ucl.ac.uk.
authors.forename: Rebecca
authors.initials: R
authors.lastname: Hardy
authors.affiliation: MRC Integrative Epidemiology Unit at the University of Bristol and School of Social and Community Medicine, University of Bristol, Bristol, UK.
authors.forename: Kate
authors.initials: K
authors.lastname: Tilling