<https://secure.gravatar.com/avatar/9474ba55de456c1aefa63cc826a9ca82?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.myrockfordchiropractor.com/what-causes-tmj-or-tmjd/>