Objective To explore the epidemic conditions of rheumatic fever (RF) with a simple method at some regions.

目的探索预测某一地区风湿热(RF)流行状况简便的方法。

youdao

Objective To explore the epidemic conditions of rheumatic fever (RF) with a simple method at some regions.

目的探索预测某一地区风湿热(RF)流行状况简便的方法。

youdao