title: Routine complexity.
authors.affiliation: Department of Surgery, Presbyterian Hospital, Pittsburgh, PA 15213, USA.
authors.forename: T R
authors.initials: TR
authors.lastname: Billiar
mesh_terms: D000046:Academic Medical Centers; D013502:General Surgery / Q000193:education / Q000592:standards* / Q000639:trends*; D006801:Humans; D012955:Societies, Medical