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Injection times from hospital arrival and symptom onset. (A) Epinephrine was administered within 30 min of hospital arrival for 52.6% of the patients, while the remaining 47.4% received epinephrine after 30 min or more. (B) Epinephrine was administered within 60 min of symptoms onset for 31.6% of than patients and more than 60 min for the remaining 68.4%.
