%0 Journal Article %T 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 %A Paul %A Benjamin Z.S. %A Feeney %A Colin M %J Western Journal of Emergency Medicine : Integrating Emergency Care with Population Health %D 2003 %I UC Irvine Health School of Medicine. %U http://escholarship.org/uc/item/1qp9b4ng