RT Journal Article SR Electronic(1) A1 Larrauri, A A1 De Mateo, S A1 Spanish Influenza Sentinel Surveillance System YR 2007 T1 Characterisation of swabbing for virological analysis in the Spanish Influenza Sentinel Surveillance System during four influenza seasons in the period 2002-2006 JF Eurosurveillance VO 12 IS 5 SP 5SP 706 OP 6 DO https://doi.org/10.2807/esm.12.05.00706-en UL https://www.eurosurveillance.org/content/10.2807/esm.12.05.00706-en