Brickner M E, Eichhorn E J, Netto D, Cigarroa R G, Brogan W C, Simonsen R L, Grayburn P A
Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas.
Cathet Cardiovasc Diagn. 1990 Jul;20(3):189-92. doi: 10.1002/ccd.1810200308.