小中大出自医学假设的一篇文章 Medical Hypotheses (2008) 71, 892–896 Case-control studies compare ‘‘apples and pears’’Tongueroposal for a retrospective cohort study in theUSA of vaccination history in relation tosubsequent childhood leukemia建议去看看这篇文章。先天基因异常加后天疫苗可能会导致儿童白血病。