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  1. Cannabis and Cannabinoids (PDQ®) - PDQ Cancer Information Summaries - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK65755
    ... States. Other Schedule I substances include heroin , LSD, mescaline, and methaqualone. Despite its designation as having no ... pain, and for which existing therapy is unsatisfactory. References Abel EL: Marihuana, The First Twelve Thousand Years. ...