RT Journal Article SR Electronic(1) A1 Twisselmann, B YR 2000 T1 Imported cases of relapsing fever in Germany JF Weekly releases (1997–2007) VO 4 IS 51 SP 1468 OP DO https://doi.org/10.2807/esw.04.51.01468-en UL https://www.eurosurveillance.org/content/10.2807/esw.04.51.01468-en