title: ["Six non-naturals", a medieval European hygienic concept, and Nightingale's nursing philosophy].
authors.forename: M
authors.initials: M
authors.lastname: Hirao
mesh_terms: D004739:England; D005060:Europe; D049672:History, 19th Century; D049691:History, Medieval; D008519:Medicine, Traditional / Q000266:history*; D010687:Philosophy, Nursing