UKBB pipeline comes with UKBB-specific [template](https://github.com/McIntosh-Lab-RRI/tvb-ukbb/blob/master/templates/template_GM.nii.gz) which is what is currently being called by [VBM](https://github.com/McIntosh-Lab-RRI/tvb-ukbb/blob/3cebec9f0d26ddfb75b82ea7b5ae678a770eb505/bb_structural_pipeline/bb_vbm#L38) Need to develop some code to create study-specific template ahead of time; see FSL documentation [here](https://fsl.fmrib.ox.ac.uk/fsl/fslwiki/FSLVBM/UserGuide)
