1. Ōmura S. Microbial metabolites: 45 years of wandering, wondering and discovering. Tetrahedron. 2011;67:6420–59.
2. Ōmura S. Splendid gifts from microorganisms. Kitasato Institute for Life Sciences. Tokyo: Kitasato University; 2015.
3. Yirga G, Teferi M, Kasaye M. Survey of medicinal plants used to treat human ailments in Hawzen district, Northern Ethiopia. Int J Biodivers Conserv. 2011;3:709–14.
4. Cameron SI, Smith RF, Kierstead KE. Linking medicinal/nutraceutical products research with commercialization. Pharm Biol. 2005;43:425–33.
5. Pan S-Y, et al. New perspectives on how to discover drugs from herbal medicines: CAM’s outstanding contribution to modern therapeutics. Evid Based Complement Altern Med. 2013;2013:627375.