In fact, one large recent survey study showed that 23% of patients in a general practice setting reported difficulty swallowing.
事实上，最近一项大型的调查研究显示23%的患者在一般治疗环境中报告吞咽困难。
The author discusses that there is hidden danger of fire safety in most of the shop fronts on the basis of survey study on fire safety in shop fronts.
笔者对沿街门面房的消防安全开展调查，论述了大多数门面房存在消防安全隐患的问题。
Methods: Using the methods of retrospective survey study, 270 senile patients who had intact clinical data during 1987-1998 for the first implantment were analysed.
方法：将1987～1998年间270例首次入院植入心脏起搏器的临床资料进行回顾性分析。
Methods: Using the methods of retrospective survey study, 270 senile patients who had intact clinical data during 1987-1998 for the first implantment were analysed.
方法：将1987～1998年间270例首次入院植入心脏起搏器的临床资料进行回顾性分析。
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