The issue focused on the potential health benefits of adding marijuana to the national drug abuse drug abuse control program. - title: Medical marijuana in the United States: what's the status? - author: Michael D. Davis, DrPH. - date: July 21, 2009 - URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2936313/ - journal: American Journal of Public Health - volume: 93 - number: E12 - pages: 10