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Light at night in adults suppresses melatonin in a nonlinear intensity‐dependent manner. In children, bright light of a single intensity before bedtime has a robust melatonin suppressing effect. To our knowledge, whether evening light of different intensities is related to melatonin suppression in young children is unknown. Healthy, good‐sleeping children (n = 36; 3.0–4.9 years; 39% male) maintained...
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