Pigeon, W. R., Hegel, M., Unützer, J., Fan, M., Sateia, M. J., Lyness, J. M., . . . Perlis, M. L. (2008). Is Insomnia a Perpetuating Factor for Late-Life Depression in the IMPACT Cohort? Associated Professional Sleep Societies, LLC.

Pigeon, Wilfred R., Mark Hegel, Jürgen Unützer, Ming-Yu Fan, Michael J. Sateia, Jeffrey M. Lyness, Cindy Phillips, and Michael L. Perlis. Is Insomnia a Perpetuating Factor for Late-Life Depression in the IMPACT Cohort? Associated Professional Sleep Societies, LLC, 2008.

Pigeon, Wilfred R., et al. Is Insomnia a Perpetuating Factor for Late-Life Depression in the IMPACT Cohort? Associated Professional Sleep Societies, LLC, 2008.