%0 Journal Article %T Refining the predictive variables in the ˇ°Surgical Risk Preoperative Assessment Systemˇ± (SURPAS): a descriptive analysis %A Anne Lambert-Kerzner %A Karl E. Hammermeister %A Michael R. Bronsert %A Robert A. Meguid %A William G. Henderson %J Archive of "Patient Safety in Surgery". %D 2019 %R 10.1186/s13037-019-0208-2 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6702720/