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Funding Information Development of this website was funded by grant #R44DA12066, contract #HHSN271200655304C, contracts #HHSN271200900003C and Grant #1R44DA027245-01, from the National Institute on Drug Abuse (NIDA) at the National Institutes of Health. The website contents are solely the responsibility of the authors and do not necessarily represent the official views of NIDA. Ongoing development and maintenance is funded by the training fee and Clinical Tools, Inc. No commercial support is received.

Clinical Tools is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.