[1] Reading Hosp Med Ctr, Dept Intervent Radiol, W Reading, PA USA
[2] Univ Arkansas Med Sci, Dept Radiol, Little Rock, AR 72205 USA
[3] Inova Alexandria Hosp, Dept Cardiovasc & Intervent Radiol, Alexandria, VA USA
[4] Haga Teaching Hosp, Dept Radiol, The Hague, Netherlands
[5] Maastricht Univ, Med Ctr, Dept Radiol, Maastricht, Netherlands
[6] Univ Melbourne, Royal Childrens Hosp, St Vincents Private Hosp, Dept Radiol,Cardiovasc Serv, Fitzroy, Vic, Australia