[1] Humboldt Univ, Charite, Dept Paediat Pneumol & Immunol, D-13353 Berlin, Germany
[2] Robert Koch Inst, D-1000 Berlin, Germany
[3] Chembio Diagnost Syst, Medford, MA USA
[4] Publ Hlth Res Inst, Newark, NJ USA
[5] Montefiore Med Ctr, New York, NY USA
[6] Statens Seruminst, DK-2300 Copenhagen, Denmark
[7] Univ Cologne, Inst Med Microbiol & Hyg, D-5000 Cologne, Germany
[8] Univ Marburg, Dept Clin Chem & Mol Diagnost, Marburg, Germany