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The characteristics of the HAE attacks.
| C1-INH-HAE type | Localization of the attack | Time between the onset of the attack and the blood sampling (h) | Possible trigger factor of the attack |
| type II | Abdominal | 3 | Stress, weather changes |
| type I | Subcutaneous | 9 | Physical trauma |
| type I | Subcutaneous | 3 | Not known |
| type I | Abdominal and subcutaneous | 2 | Not known |
| type I | Subcutaneous | 4 | Not known |
