论文部分内容阅读
过去,很多国家不认为佝偻病是疾病,也并未建议为母乳喂养的婴儿补充维生素D。但是,在美国,关于营养型佝偻病病例报告增多。美国小
In the past, many countries did not consider rickets as a disease and did not recommend vitamin D for breastfeeding infants. However, there have been more reports of cases of vegetative rickets in the United States. American small