title: [Farewell word from Tjeerd Jorna].
authors.forename: Tjeerd
authors.initials: T
authors.lastname: Jorna
mesh_terms: D000818:Animals; D006801:Humans; D009042:Motivation; D009426:Netherlands; D012952:Societies; D014730:Veterinary Medicine / Q000458:organization & administration / Q000639:trends*