Correction: Does the Chemotherapy Backbone Impact on the Efficacy of Targeted Agents in Metastatic Colorectal Cancer? A Systematic Review and Meta-Analysis of the Literature

• David L. Chan, 
• Nick Pavlakis, 
• Jeremy Shapiro, 
• Timothy J. Price, 
• Christos S. Karapetis, 
• Niall C. Tebbutt, 
• Eva Segelov