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。

youdao

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。

youdao