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van der Zweerde, T., A. Van Straten, M. Effting, S. Kyle, and J. Lancee. Does Online Insomnia Treatment Reduce Depressive Symptoms? A Randomized Controlled Trial in Individuals with Both Insomnia and Depressive Symptoms. Cambridge University Press, 2018.

van der Zweerde, T., et al. Does Online Insomnia Treatment Reduce Depressive Symptoms? A Randomized Controlled Trial in Individuals with Both Insomnia and Depressive Symptoms. Cambridge University Press, 2018.