title: Combining the Modified Allen's Test and Pulse Oximetry for Evaluating Ulnar Collateral Circulation to the Hand for Radial Artery Catheterization of the ED Patient.
authors.affiliation: Department of Medicine, Alameda County Medical Center, Oakland, CA.
authors.forename: Benjamin Z S
authors.initials: BZ
authors.lastname: Paul
authors.forename: Colin M
authors.initials: CM
authors.lastname: Feeney