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Haritou SJA, Zylstra R, Ralli C, Turner S, Tortonese DJ. Seasonal Changes in Circadian Peripheral Plasma Concentrations of Melatonin, Serotonin, Dopamine and Cortisol in Aged Horses with Cushing’s Disease under Natural Photoperiod. J Neuroendocrinology. 2008 Jul 24;20(8):988–96. doi: 10.1111/j.1365-2826.2008.01751.x. |