title: Matrix conferences needed.
authors.forename: Leo A
authors.initials: LA
authors.lastname: Gordon
mesh_terms: D003245:Consensus Statements as Topic; D013502:General Surgery; D006126:Group Processes; D017052:Hospital Mortality; D006801:Humans; D007431:Intraoperative Complications; D019300:Medical Errors / Q000517:prevention & control; D009017:Morbidity; D061214:Patient Safety; D017751:Safety Management / Q000458:organization & administration*