1 Centre for Medical Image Computing, Department of Computer Science, University College London, London, WC1V 6LJ, United Kingdom julia.sanchez.16@ucl.ac.uk.
2 Centre for Medical Image Computing, Department of Computer Science, University College London, London, WC1V 6LJ, United Kingdom.
3 Institute of Cognitive Neuroscience, University College London, London, WC1N 3AZ, United Kingdom.