Sleep disturbances are correlated with decreased morning awakening salivary cortisol

@article{Backhaus2004SleepDA,
  title={Sleep disturbances are correlated with decreased morning awakening salivary cortisol},
  author={Jutta Backhaus and Klaus Junghanns and Fritz Hohagen},
  journal={Psychoneuroendocrinology},
  year={2004},
  volume={29},
  pages={1184-1191}
}

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