Correction: Competing for Iron: Duplication and Amplification of the isd Locus in Staphylococcus lugdunensis HKU09-01 Provides a Competitive Advantage to Overcome Nutritional Limitation

• Simon Heilbronner, 
• Ian R. Monk, 
• Jeremy R. Brozyna, 
• David E. Heinrichs, 
• Eric P. Skaar, 
• Andreas Peschel, 
• Timothy J. Foster