title: [From rule of thumb to computer screen].
authors.affiliation: HYKS:n kirurgian klinikka, anestesiologian ja tehohoidon toimiala 00029 HYKS. markku.salmenperä@helsinki.fi
authors.forename: M
authors.initials: M
authors.lastname: Salmenperä
authors.forename: M
authors.initials: M
authors.lastname: Hynynen
mesh_terms: D000758:Anesthesia / Q000266:history; D000776:Anesthesiology / Q000266:history*; D020811:Biomedical Technology; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D016347:Medical Records Systems, Computerized / Q000266:history; D016343:Monitoring, Intraoperative / Q000266:history / Q000295:instrumentation