Kouris Nikos T, Sifaki Maria D, Kontogianni Dimitra D, Zaharos Ioannis, Kalkandi Eleni M, Grassos Haris E, Babalis Dimitris K
Cardiology Dept, Western Attica General Hospital, Athens 12351, Greece.
Cardiovasc Ultrasound. 2003 Mar 24;1:2. doi: 10.1186/1476-7120-1-2.