Authors: Neil Hamill; Roberto Romero; Sonia S Hassan; Wesley Lee; Stephen A Myers; Pooja Mittal; Juan Pedro Kusanovic; Tinnakorn Chaiworapongsa; Edi Vaisbuch; Jimmy Espinoza; Francesca Gotsch; Angela Carletti; Luís F Gonçalves; Lami Yeo Journal: J Ultrasound Med Date: 2009-10 Impact factor: 2.153