1·Methods An analysis of 152 SARS correlation cases was carried out by means of epidemiology and hygeian statistics methods.
采用回顾性调查和卫生统计学方法，对152例SARS相关病例的诊治情况进行综合分析。
2·The behavioral problems of preschool children have become a public hygeian problem which extremely needs to be solved in economical developed area.
经济发达地区学前儿童行为问题已成为亟待解决的公共卫生问题。