[1] Univ Hosp Essen, Univ Duisburg Essen, Dept Pediat 1, Neonatol Pediat Intens Care Pediat Neurol & Pediat, Essen, Germany
[2] Univ Hosp RWTH Aachen, Dept Med Microbiol, German Reference Lab Streptococci, Aachen, Germany
[3] Dept Gen Pediat, Klinikum Oberberg, Kreiskrankenhaus Gummersbach, Gummersbach, Germany
[4] Helios Hosp Schwelm, Dept Gen Pediat, Schwelm, Germany
[5] Marien Hosp Gelsenkirchen, Dept Gen Pediat, Gelsenkirchen, Germany
[6] Agaples Hosp Hagen, Dept Pediat, Hagen, Germany
[7] Florence Nightingale Hosp Kaiserswerth, Dept Pediat, Div Pediat Intens Care, Dusseldorf, Germany
[8] Univ Bielefeld, Protestant Hosp Bethel, Dept Pediat, Div Pediat Intens Care, Bielefeld, Germany
[9] Sankt Franziskus Hosp Munster, Dept Pediat, Munster, Germany
[10] Univ Hosp, RWTH Univ Aachen, Dept Pediat, Div Neonatol, Aachen, Germany
[11] Sana Hosp Duisburg, Dept Pediat, Div Pediat Intens Care, Duisburg, Germany
[12] GFO Hosp Bonn, Dept Pediat & Adolescent Med, Div Neonatol, Bonn, Germany
[13] DRK Hosp Kirchen, Dept Gen Pediat, Kirchen, Germany
[14] St Vinzenz Hosp Paderborn, Dept Pediat, Pediat Intens Care Med, Paderborn, Germany
[15] GFO Hosp Dinslaken, Dept Gen Pediat, Dinslaken, Germany
[16] Univ Hosp Essen, Univ Duisburg Essen, Dept Microbiol, Essen, Germany
[17] Univ Hosp, Univ Cologne, Dept Pediat, Div Pediat Intens Care, Cologne, Germany
[18] Evangel Hosp Oberhausen, Dept Gen Pediat, Oberhausen, Germany
[19] St Franziskus Hosp Ahlen, Dept Gen Pediat, Ahlen, Germany
[20] Lukas Hosp Neuss, Dept Gen Pediat, Neuss, Germany
[21] Mark Hosp Ludenscheid, Dept Gen Pediat, Ludenscheid, Germany
[22] Evangelical Hosp Dusseldorf, Dept Gen Pediat, Dusseldorf, Germany
[23] Marien Hosp Witten, Dept Gen Pediat, Witten, Germany
[24] Elisabeth Hosp Rheydt, Dept Gen Pediat, Stadt Kliniken Monchengladbach, Monchengladbach, Germany
[25] Sankt Agnes Hosp, Dept Pediat & Adolescent Med, Bocholt, Germany
[26] Hosp Soest gGmbH, Dept Gen Pediat, Soest, Germany
[27] Helios Univ Hosp Wuppertal, Witten Herdecke Univ, Dept Pediat, Div Pediat Intens Care, Wuppertal, Germany
[28] Mathias Stiftung, Dept Gen Pediat, Rheine, Germany
[29] Childrens Hosp, Dept Pediat, Div Pediat Intens Care, Amsterdamer Str, Cologne, Germany
[30] Asklepios Clin Sankt Augustin GmbH, Dept Pediat, St Augustin, Germany
[31] Hochsauerland Hosp, Dept Pediat & Adolescent Med, Arnsberg, Germany
[32] Marien Hosp gGmbH, Dept Gen Pediat, Wesel, Germany
[33] Univ Witten Herdecke, Dept Pediat, Gemeinschaftskrankenhaus Herdecke, Herdecke, Germany
[34] Hosp Leverkusen GmbH, Dept Gen Pediat, Leverkusen, Germany
[35] Heinrich Heine Univ, Dept Gen Pediat, Div Neonatol & Pediat Cardiol, Dusseldorf, Germany
[36] Univ Bonn, Dept Neonatol & Pediat Intens Care Med, Bonn, Germany
[37] Univ Witten Herdecke, Hosp Children & Adolescents, Dept Gen Pediat, Div Oncol & Haematol, Datteln, Germany
[38] Elisabeth Hosp Essen, Dept Pediat, Essen, Germany
[39] Helios Hosp Krefeld, Dept Pediat, Div Pediat Intens Care, Krefeld, Germany
[40] DRK Hosp Siegen gGmbH, Dept Gen Pediat, Siegen, Germany
[41] Dept Gen Pediat, Porz, Cologne, Germany
[42] Univ Childrens Hosp, Ruhr Univ Bochum, Div Neonatol & Pediat Intens Care, Bochum, Germany
[43] St Antonius Hosp Kleve, Dept Gen Pediat, Kleve, Germany
[44] Hosp Mechernich GmbH, Dept Gen Pediat, Mechernich, Germany
[45] Dept Pediat, Helios Clin Duisburg, Duisburg, Germany
[46] Clemenshosp Munster, Clemenshospital Munster, Munster, Germany
[47] Evangel Hosp Lippstadt, Dept Gen Pediat, Lippstadt, Germany
[48] Municipal Hosp Solingen, Dept Gen Pediat, Solingen, Germany
[49] Evangelical Hosp Hamm, Div Neonatol & Pediat Intens Care, Hamm, Germany
[50] Dept Gen Pediat, Herford, Germany