Conrad, A., Wilhelm, F. H., Roth, W. T., Spiegel, D., & Taylor, C. B. (2007). Circadian Affective, Cardiopulmonary, and Cortisol Variability in Depressed and Nondepressed Individuals at Risk for Cardiovascular Disease.

Conrad, Ansgar, Frank H. Wilhelm, Walton T. Roth, David Spiegel, and C. Barr Taylor. Circadian Affective, Cardiopulmonary, and Cortisol Variability in Depressed and Nondepressed Individuals At Risk for Cardiovascular Disease. 2007.

Conrad, Ansgar, et al. Circadian Affective, Cardiopulmonary, and Cortisol Variability in Depressed and Nondepressed Individuals At Risk for Cardiovascular Disease. 2007.