The procedure requires the resources and infrastructure of an outpatient procedure unit, two assistants, intravenous sedation and post-procedure monitoring, with a total cost in the thousands of dollars.

• 这个程序需要资源和病人体外操作单元的下部结构，两个助手，静脉麻醉，以及操作后的监护，整个花费下来要成千上万美元。