北京大学公共卫生学院
peking university health science center
第三军医大学卫生防疫系
The Dept. of Public Health
the third military medical college
chongqing
广东省韶关市卫生防疫站;北京医科大学公共卫生学院
Shaoguan Health and Antiepidemiogy Station
广西医科大学公共卫生学院;广西八一铁合金
School of Public Health
guangxi medical university
湖南医科大学卫生系
The Department of Environmental Hygiene
hunan medical university
华西医科大学公共卫生学院
School of Public Health
West China Univenity of Medical Sciences
华西医科大学公共卫生学院;成都市第二卫生防疫站
School of Public Health
West China University of Medical Sciences