Family history of sudden cardiac death. The other major warning sign is a family history of unexplained deaths before the age of 50.

有心脏猝死的家庭病史：另一个主要的警告信号则是有50岁以下的人猝死的家庭病史。

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The analysis found a significant association between sudden unexplained death and the use of a stimulant at the time of death.

研究分析发现死时在原因不明的猝死和兴奋剂的使用上存在显著相关。

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Are geomagnetic disturbances a risk factor for the sudden unexplained death of epileptic children?

地磁干扰对患癫痫小孩突然无故死亡不是一个危险因素吗？

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Bethany Clemens suffered a Sudden Unexplained Death in Epilepsy (SUDEP) in December 2011 when she boarded at Dame Hannah Rogers School in Ivybridge.

BBC: Bethany Clemens

In Britain, an inquest is an inquiry held where a death is sudden or unexplained to establish the facts around it.

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"There should be nothing in the crib but the baby, " says Rachel Moon, who heads the AAP's task force on Sudden Infant Death Syndrome (SIDS), officially any death of a baby under age 1 that remains unexplained after a thorough investigation.

WSJ: When a Cuddly Crib Puts the Baby in Danger