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澳大利亚新南威尔士大学一项新的研究认为,笑并不一定都是治病良药,至少对患哮喘的儿童不是这样。该大学儿科专家对500多名哮喘病儿童研究后发
A new study by the University of New South Wales in Australia argues that laughter does not always mean good medicine, at least not for children with asthma. The university pediatrician later studied more than 500 children with asthma