http://cannabisnowmagazine.com/cannabis/medical/marijuana-works-better-than-opiates-to-control-pain-heres-how
http://www.salem-news.com/articles/january172012/marijuana-painkiller-pl.php
http://www.ncbi.nlm.nih.gov/pubmed/22880540
http://www.safeaccessnow.org/chronic_pain_booklet
http://norml.org/library/item/chronic-pain
http://www.webmd.com/pain-management/news/20100830/marijuana-relieves-chronic-pain-research-show?page=2
http://www.medicalmarijuanainc.com/index.php/investor-relations/57-latest-news/291-cbd-approved-for-epilepsy-research
http://www.leafscience.com/2014/02/23/5-must-know-facts-cannabidiol-cbd/
http://www.canorml.org/cbd.html
http://www.harborsidehealthcenter.com/learn/CBD-rich-medicine.html