Cite

    L J Tata et al.. “Does influenza vaccination increase consultations, corticosteroid prescriptions, or exacerbations in subjects with asthma or chronic obstructive pulmonary disease?.” Thorax, vol. 58, no. 10, 2003, pp. 835–839. http://access.bl.uk/ark:/81055/vdc_100137792744.0x000028