It is a feature of both fatal and nonfatal asthma.
它是致命性和非致命性哮喘的共同特点。
Objective: to study the clinical characteristic and Risk factor in sudden-onset fatal asthma (SFA).
目的：探讨突发性致死性哮喘sfa的临床特点及其危险因素。
Objective: to study the clinical characteristic and Risk factor in sudden-onset fatal asthma (SFA).
目的：探讨突发性致死性哮喘sfa的临床特点及其危险因素。
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