Beginning with the current June issues of SLEEP and the Journal of Clinical Sleep Medicine, all papers, letters, and commentaries published in both journals now have a unique Digital Object Identifier (DOI) assigned to them. A DOI number is a permanent identifier that enables you to quickly locate digital content. The DOI System makes it easy for you to find a study online when you enter the DOI number in a search on the CrossRef website.
SLEEP and JCSM Studies Now Have DOI Numbers
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