Response to the letter from Professor Helena Hachul and colleagues

Thank you for your interest regarding our recent paper entitled: "Individuals with pain need more sleep in the early stage of mild traumatic brain injury (mTBI)" published in Sleep Medicine [1]. Overall, we found that 29% of recovering mTBI individuals express an increased need for sleep (suggesting a subgroup effect) at one month post-trauma, particularly in the context of unrelieved acute pain (1).

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