Fighting off 'flu.
Allen
D
D
D000368:Aged; D001294:Attitude to Health; D006291:Health Policy; D006299:Health Services for the Aged; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000517:prevention & control*; D009313:National Health Programs; D010349:Patient Compliance; D006113:United Kingdom
D007252:Influenza Vaccines