Correction to: Scientific Reports https://doi.org/10.1038/s41598-018-20137-2, published online 29 January 2018

This Article contains errors in References 8 and 9 which are incorrectly given as:

‘Yau, W. et al. Colistin hetero-resistance in multidrug-resistant Acinetobacter baumannii clinical isolates from the Western Pacific region in the SENTRY antimicrobial surveillance programme. J Infection 58, 138–144, https://doi.org/10.1016/j.jinf.2008.11.002 (2009).’

‘Rahim, N. A. et al. Synergistic killing of NDM-producing MDR Klebsiella pneumoniae by two ‘old’ antibiotics-polymyxin B and chloramphenicol. J Antimicrob Chemoth 70, 2589–2597, https://doi.org/10.1093/jac/dkv135 (2015).’

The correct references are listed below as refs1,2.