[1] Department of Radiology,
[2] King Faisal Specialist Hospital and Research Centre,undefined
[3] Riyadh,undefined
[4] Saudi Arabia,undefined
[5] Department of Pediatric Radiology,undefined
[6] St. Görans' Children's Hospital,undefined
[7] P. O. Box 125 00,undefined
[8] S-112 81 Stockholm,undefined
[9] Sweden,undefined
[10] Department of Oncology,undefined
[11] King Faisal Specialist Hospital and Research Centre,undefined
[12] Riyadh,undefined
[13] Saudi Arabia,undefined