PROGRAMME GRANTS FOR APPLIED RESEARCH VOLUME 4 ISSUE 1 MARCH 2016 ISSN 2050-4322 DOI 10.3310/pgfar04010 Towards reducing variations in infant mortality and morbidity: a population-based approach David Field, Elaine Boyle, Elizabeth Draper, Alun Evans, Samantha Johnson, Kamran Khan, Bradley Manktelow, Neil Marlow, Stavros Petrou, Catherine Pritchard, Sarah Seaton and Lucy Smith