RT Journal Article SR Electronic(1) A1 Mather, H YR 1997 T1 Whooping cough in Switzerland JF Weekly releases (1997–2007) VO 1 IS 35 SP 1004 OP DO https://doi.org/10.2807/esw.01.35.01004-en UL https://www.eurosurveillance.org/content/10.2807/esw.01.35.01004-en