心血管病流行病学
Cardiovascular epidemiology
病人流行
the patients flow direction
以人群为基础的流行病学调查
population-based epidemiological survey
胃肿瘤·基因型·流行病学
Stomach neoplasms·Genotype·Epidemiology
胰性脑病/病因学
pancreatic encephalopathy
残胃癌流行病学研究
epidemiological study of gastric stump carcinoma
地理流行病学
Geographical epidemiology
Geograghical epidemiology
Seographical epidemicology
Geographic epidemiology