Bronchial asthma is a chronicity airway inflammation disease.

支气管哮喘是一种慢性气道炎症性疾病。

Nursing management needs to focus on the chronicity of the disease and preventing visual impairment.

护理重点是疾病的长期性和防止视力受损。

In spite of its high mortality, morbidity and chronicity, there are few intervention studies on the subject.

虽然有高致死率致病率及慢性化，仍少有介入的研究在这样的主题。

Methods: The questionnaire use 227 women with chronicity systemic diseases Which aged 40~55 in Bai Zhifang area.

方法：对白纸坊社区227例40～55岁患慢性躯体疾病的妇女采用问卷调查。

The virological characteristics of HBV are closely related with the chronicity and disease course of hepatitis B.

HBV的这些病毒学特点与乙型肝炎的慢性化和疾病进展密切相关。