RT Journal Article SR Electronic T1 Influenza vaccine and older people: an evidence-based policy? JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 271 OP 272 VO 47 IS 418 A1 M D Bradley A1 T A Sheldon A1 I S Watt YR 1997 UL http://bjgp.org/content/47/418/271.abstract AB