sentences:  In 1995, Partnership for a Drug-Free America with support from the National Institute on Drug Abuse (NIDA) and the White House Office of Drug Control Policy launched a campaign against cannabis use citing a Center on Addiction and Substance Abuse (CASA) report, which claimed that cannabis users are 85 times more likely than non-cannabis users to try cocaine.Additionally, some research suggests that marijuana use is likely to proceed the use of other licit and illicit substances.However, an article published in "The Activist Guide" by John Morgan and Lynn Zimmer entitled "Marijuana's Gateway Myth", claims CASA's statistic is false.