Dr. Classen is just now completing his last business in Frankfurt.

克拉森医生正在法兰克福完成他的最后一项工作。

"We have a much more complicated patient mix, more problems, more medications, so there is more room for error," Classen explained.

“现在住院的病人病情繁杂，问题较多，用药物也多，因此发生医疗差错的机会也多。”克拉森解释说。

Medication errors were most common, followed by errors in surgical and nonsurgical procedures and in common infections, Classen said.

克拉森说，用药差错最常见，其次是手术和非手术治疗程序的差错，第三是院内感染。