The estimate of duration includes a series of questions about the duration of specific symptoms that might be a sign of AD, medical records review, and informant interview.
持续时间的估算包括了一系列有关的特定的症状(可能是AD征兆)持续时间的问题、病史回顾及知情者访谈。
2
This review found that the diagnosis of myocardial infarction is more difficult after surgery since classic symptoms may be atypical or absent.
本综述发现，由于心肌梗死的典型症状不典型或缺失，其术后诊断更困难。
3
A recent meta-reviewof research showed that taking zinc within 24 hours of the onset of symptoms can reduce the duration-but not the severity-of a cold by one day.