Cameli Matteo, Lisi Matteo, Mondillo Sergio, Luzzi Luca, Bigio Elisa, Marchetti Luca, Biagioli Bonizzella
Department of Cardiovascular Diseases, University of Siena, Siena, Italy.
J Ultrasound Med. 2010 Oct;29(10):1511-3. doi: 10.7863/jum.2010.29.10.1511.