Deletion of Friedrich Stephan

Comment: Stephan is the discoverer of the suprachiasmatic nucleus (the "body clock") and undoubtedly passes 
Stance: keep
Cited policy: Wikipedia:Notability (WP:PROF)

Comment: Please see #AfD_etiquette and 
Stance: comment
Cited policy: Wikipedia:Articles for deletion (WP:AFD||WP:CIVIL)