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The control group was allowed to use reading lamps and adjust lights and seating position to their liking.
by manicdee 5y ago
The control group was allowed to use reading lamps and adjust lights and seating position to their liking.
- nautilius 5y agoCan you point me where that is described? All I find is "(ii) reading a printed book in the same very dim room light for ∼4 h before bedtime for five consecutive evenings", highlight mine.