GHC Summit at Harvard Medical School Announces Cannabis Science as Industry Partner in the Launch of the International Phytomedicines Institute at Harvard Medical School IRVINE, CA, May 31, 2019 (GLOBE NEWSWIRE) -- via NEWMEDIAWIRE -- Cannabis Science, Inc. (OTC: CBIS), a U.S. company specializing in the research and development of cannabinoid-based medicines, is...