title: Reply to letter.
authors.affiliation: Departments of Neurology, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA.
authors.forename: Clifford B
authors.initials: CB
authors.lastname: Saper
mesh_terms: D006801:Humans; D064086:Medical Marijuana; D009422:Nervous System Diseases / Q000188:drug therapy*; D009462:Neurology; D012906:Smoke
chemical_list: D064086:Medical Marijuana; D012906:Smoke