RT Journal Article SR Electronic T1 Two for one influenza immunisation: mothers and infants JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 269 OP 269 VO 64 IS 3 A1 R J P José YR 2009 UL http://thorax.bmj.com/content/64/3/269.1.abstract AB