[1] Univ Texas Southwestern Med Ctr Dallas, Dept Radiol, Div Musculoskeletal Imaging, 5323 Harry Hines Blvd, Dallas, TX 75390 USA
[2] Univ Washington, Dept Radiol, Div Musculoskeletal Imaging & Intervent, 4245 Roosevelt Way NE,Box 354755, Seattle, WA 98105 USA
[3] New York Univ Grossman Sch Med, Dept Radiol, Div Musculoskeletal Imaging, Ctr Biomed Imaging, 660 First Ave,Room 223, New York, NY 10016 USA
[4] Inst Imaging Svizzera Italiana, Clin Radiol EOC, Via Tesserete 47, CH-6900 Lugano, Switzerland
[5] Univ Washington, Div Musculoskeletal Imaging & Intervent, Dept Radiol, Med Ctr,UW Radiol Roosevelt Clin, 4245 Roosevelt Way Northeast,Box 354755, Seattle, WA 98105 USA