Correspondence to Dr David McDuff, Psychiatry, University of Maryland School of Medicine, Baltimore MD 21201, USA; dmcduff52{at}gmail.com Background Substances from various classes may be used for ...

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Customer feedback is one of the quickest and most efficient ways to improve your business. After all, who would know better than your customers what you do well and what could use improvement? The ...

CPAP therapy can help you decrease snoring and improve your sleep by keeping your airways open. Insurance often covers CPAP machines, which cost between $350 and $3,000. Using a CPAP machine every ...

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