Returns the region name that matches specified coordinates
in the specified atlas.

Parameters: x, y, z, collection, atlas

Example: '/api/atlases/atlas_query_voxel/?x=30&y=30&z=30&collection=Harvard-Oxford cortical and subcortical structural atlases&atlas=HarvardOxford cort maxprob thr25 1mm'

GET /api/atlases/atlas_query_voxel/?x=30&y=30&z=30&collection=Harvard-Oxford%20cortical%20and%20subcortical%20structural%20atlases&atlas=HarvardOxford%20cort%20maxprob%20thr25%201mm
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json ;utf-8
Vary: Accept

"middle frontal gyrus"