南宁市科学研究与技术开发计划项目20123158;南宁市兴宁区科学研究与技术开发项目2013A11;广西壮族自治区卫生厅自筹经费科研课题z2011101Science and Technology Development Projects of Nanning 20123158;Scientific Research and Technological Development Projects of Xingning District in Nanning2013A11;Health Department self-raised Funds Research Projects of Guangxi Zhuang Autonomous Regionz2011101