The two groups were followed up for 3 years with accepted examination of blood routine, blood gas analysis and lung function per 6 months.
对两组病人进行连续3年随访，每半年复查血常规、血气分析、肺功能。
The two groups were followed up for 3 years with accepted examination of blood routine, blood gas analysis and lung function per 6 months.
对两组病人进行连续3年随访，每半年复查血常规、血气分析、肺功能。
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