新药物在临床试验期间接受有限的安全性评估后，即正式注册并投放市场；在大规模普遍使用过程中，只能出现极为罕见的意外的副作用个案。
New medicines are registered and enter the market with limited safety evaluation during clinical trials; rare unexpected side effects can only be detected during large-scale use.
新药物在临床试验期间接受有限的安全性评估后，即正式注册并投放市场；在大规模普遍使用过程中，只能出现极为罕见的意外的副作用个案。
New medicines are registered and enter the market with limited safety evaluation during clinical trials; rare unexpected side effects can only be detected during large-scale use.
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