Correction to: Scientific Reports https://doi.org/10.1038/s41598-018-19758-4, published online 30 January 2018

The original version of this Article omitted an affiliation for Polyxeni Gkontra. The correct affiliations for Polyxeni Gkontra are listed below:

Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, 28029, Spain

Biomedical Image Technologies (BIT), ETSI Telecomunicación, Universidad Politécnica de Madrid, Madrid, 28040, Spain

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