Because of the asymmetric information problem, the principal (patient) is unable and without incentive to supervise the agent 's (doctor's) activities from begiming to end.
由于信息不对称，委托人（病人）自始至终无法也没有激励机制去监督代理人（医生）行为。
The sustained release compositions are useful in providing therapeutically effective levels of active agent(s) for extended periods of time.
持 续释放组合物可用于在延长时段内提供活性剂的治疗有效水平。
The sustained release compositions are useful in providing therapeutically effective levels of active agent(s) for extended periods of time.
持 续释放组合物可用于在延长时段内提供活性剂的治疗有效水平。
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