Great care must be exercised when carrying out invasive medical procedures such as surgery. Even though drug testing is a common practice and seems safer than surgery, a similar degree of caution is required.
侵入性的醫療方式（手術）固然需要謹慎從事，看似較安全、數量也佔最大宗的藥物試驗，也不能掉以輕心。