Skrabal Maryann Z, Stading Julie A, Cannella Carrie A, Monaghan Michael S
School of Pharmacy and Health Professions, Creighton University, 2500 California Plaza, Omaha, NE 68178, USA.
Am J Health Syst Pharm. 2003 Mar 15;60(6):578-81. doi: 10.1093/ajhp/60.6.578.