| Richard W Morris | Bristol Medical School, University of Bristol |
| George Davey Smith | From the Medical Research Council Integrative Epidemiology Unit, Bristol Medical School, University of Bristol |
| George Davey Smith | Bristol Medical School, University of Bristol |
| George Davey Smith | From the Medical Research Council Integrative Epidemiology Unit, Bristol Medical School, University of Bristol |
| George Davey Smith | Bristol Medical School, University of Bristol |