Shellock Frank G, Kanal Emanuel, Gilk Tobias B
Department of Radiology, Institute for Magnetic Resonance Safety, Education, and Research, Keck School of Medicine, University of Southern California, 7511 McConnell Ave., Los Angeles, CA 90045, USA.
AJR Am J Roentgenol. 2011 Jan;196(1):142-5. doi: 10.2214/AJR.10.5004.