Correction to: Scientific Reports https://doi.org/10.1038/s41598-019-39710-4, published online 28 February 2019

The original version of this Article contained an error in Affiliation 10, which was incorrectly given as ‘AI Lab, Faculty of Information Technology, Ton Duc Thang University, Ho Chi Minh City, Vietnam, Ho Chi Minh City, Vietnam’. The correct affiliation is listed below:

AI Lab, Faculty of Information Technology, Ton Duc Thang University, Ho Chi Minh City, Vietnam

This error has now been corrected in the HTML and PDF versions of the Article.