Confounding by indication in non-experimental evaluation of vaccine effectivenessEelko Hak,Th J M Verheij,Diederick E. Grobbee,K L Nichol,Arno W. HoesJournal of Epidemiology and Community Health(2002)引用 23|浏览5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