Methods We applied genetic epidemiological study.
方法遗传流行病学研究。
METHODS We adopted Epidemiological Field Research method to study it.
方法采用流行病学现场研究方法进行研究。
Methods Epidemiological field research method was adopted to study it.
方法通过现场流行病学方法进行调查。
DESIGN: a study of epidemiological prevalence.
设计：现况调查。
DESIGN: a study of epidemiological prevalence.
设计：现况调查。
应用推荐