Barst RJ, McGoon M, McLaughlin V, Tapson V, Oudiz R, Shapiro S, Robbins IM, Channick R, Badesch D, Rayburn BK, Flinchbaugh R, Sigman J, Arneson C, Jeffs R, for the Beraprost Study Group. Beraprost Therapy for Pulmonary Arterial Hypertension.: J Am Coll cardiol 2003;41:2119–25

Luke's Medical Center, Chicago, Illinois; §Duke University Medical Center, Durham, North Carolina; ||Research and Education Institute at Harbor-UCLA Medical Center, Torrance, California; ¶USC Medical Center, Los Angeles, California; #Vanderbilt University Medical Center, Nashville, Tennessee; **University of California-San Diego Medical Center, La Jolla, California; [dagger][dagger]University of Colorado Health Sciences Center, Denver, Colorado; [double dagger][double dagger]University of Alabama at Birmingham, Birmingham, Alabama; and §§United Therapeutics Corporation, Research Triangle Park, North Carolina.