National differences in vaccine hesitancy: a concern for the external validity of vaccine studiesChristian Ammitzbøll,Marianne Kragh Thomsen,Christian Erikstrup,Ellen-Margrethe Hauge,Anne TroldborgThe Lancet Rheumatology(2021)引用 6|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