<a href="https://de.wikipedia.org/wiki/Johannes_Dichgans" class="extiw" title="de:Johannes Dichgans">Johannes Dichgans</a>, leading German neuro-scientist and neurologist
<a href="//commons.wikimedia.org/wiki/User:Gwyndon" title="User:Gwyndon">Wettach</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>