给新生儿应用维K预防出血性疾病已成常规。在美国、加拿大和许多欧洲国家，几乎所有的新生儿都用过维K．而最近有两项研究发现肌注过维K的婴儿，儿童期患癌的危险性为预测的两倍．这一涉及大众健康的相关性若被证实，将是很重要的．为此，Klebanoff等人进行了一次配对病例对照? The application of vitamin K to neonatal hemorrhagic disease has become a routine. In the United States, Canada, and many European countries, almost all newborns have used K. Two recent studies found that babies who had intramuscularly infused K had twice the risk of developing cancer in childhood. The relevance of this public health will prove to be very important. To this end, Klebanoff, who conducted a matched case-control?