Bereczkei指出，选择压力更多的来自进化压力，而较少受心理或社会因素的影响。
The choices are driven less by psychology and socialization and more by evolutionary pressures, suggests Bereczkei.
判断不同国家结核病发病率趋势的差异是否可归咎于结核控制规划的成效或生物学、社会和经济因素。
To determine whether differences in national trends in tuberculosis incidence are attributable to the variable success of control programmes or to biological, social and economic factors.
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