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。
