Authors: Tracey Bywater; Vashti Berry; Sarah Louise Blower; Judith Cohen; Nicole Gridley; Kathleen Kiernan; Laura Mandefield; Amanda Mason-Jones; Sinead McGilloway; Kirsty McKendrick; Kate Pickett; Gerry Richardson; M Dawn Teare; Louise Tracey; Simon Walker; Karen Whittaker; Jessica Wright Journal: BMJ Open Date: 2018-12-19 Impact factor: 2.692