Testa Americo, Candelli Marcello, Pignataro Giulia, Costantini Alessandro Maria, Pirronti Tommaso, Silveri Nicolò Gentiloni
Departments of Emergency Medicine, Catholic University, Agostino Gemelli Hospital, Rome, Italy.
J Ultrasound Med. 2008 Oct;27(10):1507-9. doi: 10.7863/jum.2008.27.10.1507.