RT Journal Article SR Electronic(1) A1 Leitmeyer, K A1 Buchholz, U A1 Kramer, M. A1 Schweiger, B YR 2002 T1 Enhancing the predictive value of throat swabs in virological influenza surveillance JF Eurosurveillance VO 7 IS 12 SP 180SP 389 OP 183 DO https://doi.org/10.2807/esm.07.12.00389-en UL https://www.eurosurveillance.org/content/10.2807/esm.07.12.00389-en