Tracing the foundations of a conceptual framework for a patient safety ontology

William B Runciman, G Ross Baker, Philippe Michel, Susan Dovey, Richard J Lilford, Natasja Koitzsch Jensen, Rhona Flin, William B Weeks, Pierre Lewalle, Itziar Larizgoitia, David Bates, Methods & Measures Working Group of the World Health Organization World Alliance for Patient Safety