Mutation was not detected in all patients indicating that other factors be attributable to hypospadias occurrence.
不是在所有病人中均发现了突变,提示还有别的因素参与了尿道下裂的发生.
The aetiological fraction attributable to differences in work environment exposures was calculated to be 40 %.
工作环境暴露的差异约占病假可归因危险的40%.
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