In cancer patients suffering from pain, how does cannabis, compared to no cannabis, affect pain management?
cannabis or marijuana or thc or cbd or tetrahydrocannabinol or cannabidiol
pain or discomfort or distress or nausea or vomit*
cancer or neoplasm* or oncology or tumor or malignancy or chemotherap*
randomized controlled trial* or rtc or randomised control trial* or systematic review or meta analysis
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