RT Journal Article SR Electronic(1) A1 Therre, H A1 Baron, S A1 contributors YR 2000 T1 Pertussis immunisation in Europe – the situation in late 1999 JF Eurosurveillance VO 5 IS 1 SP 6SP 1 OP 10 DO https://doi.org/10.2807/esm.05.01.00001-en UL https://www.eurosurveillance.org/content/10.2807/esm.05.01.00001-en