Update collaborators.yaml

Author: smkia

_data/collaborators.yaml

@@ -85,3 +85,11 @@
   department: Department of Psychiatry
   university: University Medical Center Utrecht
   country: the Netherlands
+
+- name: Julio E.
+  last_name: Villalon Reina
+  title: Dr.
+  url: https://scholar.google.com/citations?user=8b2QMPoAAAAJ&hl
+  department: Institute for Neuro Imaging and Informatics
+  university: University of Southern California
+  country: USA