Herskowitz, Daniel M (1) Ragonese, Ester (liverpool John Moores University, Rees, Anne (university Of Portsmouth, Ives, Jo (liverpool John Moores University, Dray, Terry (keele University (1) Palmer, Andrew (1) Jevons, W Stanley (1) Drife, James Owen (university Of Leeds), Lewis, Gwyneth (university College London), Neilson, James P (university Of Liverpool), Knight, Marian (national Perinatal Epidemiology Unit (1)