基本流和可选流对于开发和测试团队是清晰的和可以理解的，并且已经收到了最终用户的正式批准。
The basic flow and the alternative flows are clear and are understandable by the development and test teams, and have received approval from the end users.
目前被FDA批准上市的药物已经在6岁及6岁以上儿童的临床试验中进行了安全性和有效性测试。
FDA-approved medications currently on the market have been tested for safety and effectiveness in clinical trials of children 6 and older.
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