现有疫苗接种的坏处，we hope to develop a new vaccine delivery type.
附表格:

不发达国家疫苗接种状况，原因（运输、成本等）we hope everyone even in the least developed country can enjoy the benefit of medical progrss.
附图附表格
TD-1可行性
nature biotechnology图
校园调查对于透皮疫苗接受度
附图

References

1. ...
2. ....