Correction to 'Reactive oxygen species drive evolution of pro-biofilm variants in pathogens by modulating cyclic-di-GMP levels'. Issue 9 (20th September 2017) - Chua, Song Lin; Ding, Yichen; Liu, Yang; Cai, Zhao; Zhou, Jianuan; Swarup, Sanjay; Drautz-Moses, Daniela I.; Schuster, Stephan Christoph; Kjelleberg, Staffan; Givskov, Michael; Yang, Liang