title: Mendelian randomization: where are we now and where are we going?
authors.affiliation: Department of Public Health and Primary Care, University of Cambridge MRC Integrative Epidemiology Unit, School of Social and Community Medicine, University of Bristol Homerton College, University of Cambridge julia.mackay@bristol.ac.uk.
authors.forename: Stephen
authors.initials: S
authors.lastname: Burgess
authors.affiliation: MRC Integrative Epidemiology Unit, School of Social and Community Medicine, University of Bristol julia.mackay@bristol.ac.uk.
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Timpson
authors.affiliation: Department of Non-communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine julia.mackay@bristol.ac.uk.
authors.forename: Shah
authors.initials: S
authors.lastname: Ebrahim
authors.affiliation: MRC Integrative Epidemiology Unit, School of Social and Community Medicine, University of Bristol julia.mackay@bristol.ac.uk.
authors.forename: George
authors.initials: G
authors.lastname: Davey Smith
mesh_terms: D015984:Causality; D002965:Classification; D015340:Epidemiologic Research Design; D005544:Forecasting; D055106:Genome-Wide Association Study / Q000639:trends; D006801:Humans; D057182:Mendelian Randomization Analysis / Q000639:trends*; D055432:Metabolomics / Q000639:trends; D010641:Phenotype; D011897:Random Allocation; D018401:Sample Size