DESIGN: A retrospective descriptive epidemiology study.
设计：回顾性描述流行病学分析。
Objective to investigate the DNA type of Trichophyton rubrum and to discuss the application of DNA typing method in its clinical identification and epidemiology study.
目的研究红色毛癣菌dna分型并探讨DNA分型技术在临床菌种鉴定以及流行病学中的应用。
Objective To provide the basis for caries prevention program and offer relevant evaluation criterion, dental fluorosis epidemiology study was made in Nanzhuang and Xiaotang, Nanhai City.
目的了解南海市南庄镇和小塘镇人群氟牙症流行状况，作为制订防龋计划的依据和防龋项目评价的基线资料。
The objective of epidemiology study is to search aetiology, and to measure its causal effect in the light of quantity, thereby prevent from the occurrence of disease.
流行病学研究的目的是寻找疾病的病因，并对其产生的因果效应进行定量测量，进而预防疾病的发生。
The objective of epidemiology study is to search aetiology, and to measure its causal effect in the light of quantity, thereby prevent from the occurrence of disease.
流行病学研究的目的是寻找疾病的病因，并对其产生的因果效应进行定量测量，进而预防疾病的发生。
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