title: [Finding the "iceberg" at ground level].
authors.forename: Urs
authors.initials: U
authors.lastname: Lüthi
mesh_terms: D000368:Aged; D005851:Geriatric Nursing; D006801:Humans; D009723:Nurse-Patient Relations; D003668:Pressure Ulcer / Q000451:nursing* / Q000517:prevention & control