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| Group | Total cases | WES(−) | WES(+) |
| APE group | 426 | 426 | 0 |
| CTEPH group | 156 | 156 | 0 |
| PAS group | 12 | 0 | 12 |
| P value@ | 0.000 | ||
WES (−): wall eclipsing sign negative; WES (+): wall eclipsing sign positive.
@ Comparison among patients with PAS, CTEPH, and APE.
