Assessing causal relationships in genomics : from Bradford-Hill criteria to complex gene-environment interactions and directed acyclic graphs - Geneletti, Sara (London School of Economics. Department of Statistics) ; Gallo, Valentina (Imperial College. Department of Epidemiology and Public Health (Londres, Regne Unit)) ; Porta, Miquel, 1957- (Universitat Autònoma de Barcelona. Departament de Pediatria, d'Obstetrícia i Ginecologia i de Medicina Preventiva) ; Khoury, Muin J. (National Office of Public Health Genomics (Atlanta, Estats Units d'Amèrica)) ; Vineis, Paolo (Imperial College. Department of Epidemiology and Public Health (Londres, Regne Unit))