The Duke study with child cerebral palsy patients is a clinical test.

VOA: special.2011.02.01

The clinical trial was designed such that almost two million elementary school children were given this test vaccine.

该临床试验的计划是,向近二百万的小学学生,接种这种测试疫苗

耶鲁公开课 - 生物医学工程探索课程节选