[1] George Washington Univ, Med Fac Associates, 900 23rd St Northwest,Suite G 2092, Washington, DC 20037 USA
[2] George Washington Univ Hosp, Dept Radiol, 900 23rd St Northwest,Suite G 2092, Washington, DC 20037 USA
[3] Travis Air Force Base, Dept Radiol, David Grant Med Ctr, 101 Bodin Cir, Fairfield, CA 94533 USA
[4] George Washington Univ Hosp, Dept Pathol, 900 23rd St Northwest,Suite G 2092, Washington, DC 20037 USA
[5] MD Anderson Canc Ctr, Dept Thorac Imaging, 1515 Holcombe Blvd,Unit 1478, Houston, TX 77030 USA
[6] Amer Coll Radiol, Amer Inst Radiol Pathol, 1100 Wayne Ave,Suite 1020, Silver Spring, MD 20910 USA
[7] MedStar Georgetown Univ Hosp, Washington, DC USA