Methods:Analysis and comparison of 6 item serum lipids in 177 biliary system cancer, 213 gallstone patients and 187 populationcontrols.
方法测定177例胆道癌，213例胆石症，187例对照人群六项血脂指标，并进行分析比较。
2
According to Liu, the populationcontrols have kept sulphur dioxide emissions down by 17.6% and the main source of water pollution by 30.8%.
刘少杰称，人口控制已经将二氧化硫的排放量降低了17.6%，水污染的主要来源减少了30.8%。
3
Some Chinese scholars now say the costs of coping with a rapidly ageing population will outweigh the benefits of maintaining draconian populationcontrols.