Can the Swedish new variant of Chlamydia trachomatis (nvCT) be detected by UK NEQAS participants from seventeen European countries and five additional countries/regions in 2009? Unemo, M and Rossouw, A and James, V and Jenkins, C, Eurosurveillance, 14, 19206 (2009), https://doi.org/10.2807/ese.14.19.19206-en