After publication of this Research , we noted that there is a misspelling in the name of Mogens Killian. Furthermore, we noted errors to Additional File 1, Table S1. For the strain S. pneumoniae AP200, the "Location of isolation" should be "Italy" rather than "University of Siena". Also, in the Acknowledgements, we should have thanked all the AP200 genome project participants for providing early access to the AP200 genome sequences rather than Annalisa Pantosti only. The AP200 genome project was supported by a grant from the Italian Ministry of Research (FIRB 2005-RBLA054453).
Claudio Donati, Luisa Hiller N, Hervé Tettelin, Alessandro Muzzi, Croucher NicholasJ, Angiuoli SamuelV, Marco Oggioni, Dunning Hotopp JulieC, Hu FenZ, Riley DavidR, Antonello Covacci, Mitchell TimJ, Bentley StephenD, Mogens Kilian, Ehrlich GarthD, Rino Rappuoli, Richard MoxonE, Vega Masignani: Structure and dynamics of the pan-genome of Streptococcus pneumoniae and closely related species.