[1
]
1 Department of Radiology and Imaging Sciences, Division of Emergency Radiology, Emory
University Hospital Midtown, 550 Peachtree Rd, Atlanta, GA 30308.
[2
]
2 Baqai School of Medicine, Baqai Medical University, Karachi, Pakistan.
[3
]
3 Department of Radiology, The University of Texas MD Anderson Cancer Center, Houston,
TX.
[4
]
4 Department of Radiology, Vancouver General Hospital, Vancouver, BC, Canada.