国家自然科学基金81460285;云南公共卫生与疾病防控协同创新中心项目2014YNPHXT13;云南省科技厅-昆明医科大学应用基础研究联合资金项目2015FB007National Natural Science Foundation of China81460285;the Project for the Collaborative Innovation Center of Public Health and Disease Prevention and Control of Yunnan Province2014YNPHXT13;the Applying Basic Research Joint Funding Project of Yunnan Provincial Science and Technology Department and Kunming Medical University2015FB007