TY - STAND AU - C. Sammon AU - A. McGrogan AU - J. Snowball AU - C. de Vries BT - Vaccine DO - 10.1016/j.vaccine.2011.11.077 M1 - 14 PY - 2012 SP - 2483 EP - 9 T2 - Vaccine TI - Factors associated with uptake of seasonal and pandemic influenza vaccine among clinical risk groups in the UK: an analysis using the General Practice Research Database VL - 30 SN - 0264-410x ER -