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| #1 after thymectomy [All Fields] |
| #2 postoperation [All Fields] |
| #3 after thymoma resection [All Fields] |
| #4 #1 OR #2 OR #3 |
| #5 myasthenic crisis [All Fields] |
| #6 myasthenia [All Fields] |
| #7 myasthenia gravis [All Fields] |
| #8 #5 OR #6 OR #7 |
| #9 #4 AND #8 |
