<https://secure.gravatar.com/avatar/c722fad1e670f010dcee4806dc39e27a?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://klinikum-weiden.ru/pozitronno-emissionnaya-tomografiya/>