Cohort effects on the relation of social networks to mortality among elderly persons in a rural area of Japan.N Yasuda,S Koda,H OharaAMERICAN JOURNAL OF EPIDEMIOLOGY(1999)引用 0|浏览1暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要