title: In memoriam Ralf Kohnen, PhD, professor of clinical psychology.
authors.forename: Claudia
authors.initials: C
authors.lastname: Trenkwalder
authors.forename: Heike
authors.initials: H
authors.lastname: Benes
authors.forename: Richard P
authors.initials: RP
authors.lastname: Allen
mesh_terms: D005858:Germany; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D011586:Psychology, Clinical / Q000266:history*; D012148:Restless Legs Syndrome / Q000266:history