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Czeisler, C. A., Shanahan, T. L., Klerman, E. B., Martens, H., Brotman, D. J., Emens, J. S., et al. (1995). Suppression of melatonin secretion in some blind patients by exposure to bright light. N Engl J Med, 332(1), 6–11.
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Raiewski, E. E., Elliott, J. A., Evans, J. A., Glickman, G. L., & Gorman, M. R. (2012). Twice daily melatonin peaks in Siberian but not Syrian hamsters under 24 h light:dark:light:dark cycles. Chronobiol Int, 29(9), 1206–1215.
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