1. Zhu L.F., Zhao Y. Two-way referral system and information technology to achieve the exploration. China's hospital Vol. 9(2009), pp.53-55.
2. Zeng Y.P., Zhang T.M., Liang G., Chen M. Relying on regional information platform for two-way referral system. Hospital-CEO Vol. 13(2009), pp.58-60.
3. Liu N.F., Tang S.Z., Wu B.H. Construction of two-way referral, information sharing network system. Journal of General Practice Vol. 5(2009), pp.441-444.
4. Niu L.P., Guo X.Z. UML object-oriented design and analysis . Beijing: Tsinghua University Press(2007), p.24.
5. Zhang Y.H., Liu F. Based on information technology platform supporting the community and general hospitals under the new model of two-way referral. Chinese General Practice. Vol. 11 (2008), pp.1736-1738.