The added value of a European Union tuberculosis reference laboratory network – analysis of the national reference laboratory activities Drobniewski, F A and Nikolayevskyy, V and Hoffner, S and Pogoryelova, O and Manissero, D and Ozin, A J, Eurosurveillance, 13, 8076 (2008), https://doi.org/10.2807/ese.13.12.08076-en