Correction: Novel IgG-Degrading Enzymes of the IgdE Protease Family Link Substrate Specificity to Host Tropism of Streptococcus Species

• Christian Spoerry, 
• Pontus Hessle, 
• Melanie J. Lewis, 
• Lois Paton, 
• Jenny M. Woof, 
• Ulrich von Pawel-Rammingen