Poor sleep and the risk of dementia go hand in hand, but no one knew which came first -- until now.
원문출처 : https://www.cnn.com/2018/03/12/health/daytime-sleepiness-dementia-study/index.html
원문출처 : https://www.cnn.com/2018/03/12/health/daytime-sleepiness-dementia-study/index.html