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Pre- and intraoperative tests.
| ▪ Preoperative Tests |
| - Plain radiography |
| - Haematological screening tests (level of c-reactive protein (>0,5 mg/dl), white blood-cell count (> 12/nl)) |
| - Aspiration |
| ▪ Intraoperative Tests |
| - Histopathological Evaluation |
| - Intraoperative Cultures |
At least three of these tests had to be positive whereas either positive histopathological evaluation or positive intraoperative cultures had to be included.
