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The Four Corners Sign

A Specific Imaging Feature in Differentiating Systemic Sclerosis-related Interstitial Lung Disease From Idiopathic Pulmonary Fibrosis

Walkoff, Lara MD*; White, Darin B. MD*; Chung, Jonathan H. MD; Asante, Dennis MS; Cox, Christian W. MD*

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Journal of Thoracic Imaging: May 2018 - Volume 33 - Issue 3 - p 197-203
doi: 10.1097/RTI.0000000000000319
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