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| Treatment | No. (%) |
|---|---|
| Antihistamine | 144 (82.3) |
| Intravenous fluid | 115 (65.7) |
| Systemic steroid | 101 (57.4) |
| Intramuscular epinephrinea | 82 (46.8) |
| Bronchodilator | 49 (28) |
| Oxygen supply | 43 (24.6) |
aIncluding the 3 patients (1.7%) who had epinephrine injection before the arrival at hospital.
