To examine the relationship between after-hours (ie, nights and weekends) emergency general surgery and morbidity or mortality in dogs and cats during hospitalization.

中文翻译：

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狗和猫住院期间手术开始时间（定期与下班后）与发病率和死亡率之间的关联

研究下班后（即晚上和周末）急诊普通手术与住院期间狗和猫的发病率或死亡率之间的关系。