title: You cannot use what you do not know.
authors.forename: Robert H
authors.initials: RH
authors.lastname: Johr
mesh_terms: D002983:Clinical Competence; D004724:Endoscopy; D006801:Humans; D008545:Melanoma / Q000175:diagnosis*; D015203:Reproducibility of Results; D012878:Skin Neoplasms / Q000175:diagnosis*