目录
中英文缩略词.......................................................... (1)
中文摘要.......................................................... ........................................ (2)
英文摘要.......................................................... (4)
1. 引言.......................................................... (7)
2.对象与方法.......................................................... .. (13)
2.1 研究对象的入选标准及排除标准 (13)
2.2 研究对象的选择................ ......................................... . (14)
2.3 试验方法...................................... ................... . (16)
2.4 观察指标..................................... .................... . (20)
2.5 统计学处理.......................................................... . (26)
3. 结果............................................... ........ . ... . (26)
4. 讨论.......................................................... . (28)
5. 结论............................................ ............. (31)
6. 参考文献................................... ...................... (32)
附录........................................ ................. . (35)
致谢................................................... ..... (42)
综述................................................. ..... .. ... (43)