1. Use and acceptance of complementary and alternative medicine among the general population and medical personnel: a systematic review;Frass;Ochsner J,2012
2. World Health Organization (WHO) . Traditional complementary and integrative medicine. Available: https://www.who.int/traditional-complementary-integrative-medicine/about/en/ [Accessed 03 Nov 2019].
3. Bodeker C , Bodeker G , Ong CK , et al . WHO global atlas of traditional, complementary and alternative medicine. Geneva, Switzerland: WHO, 2005.
4. Bandaranayake WM . Quality Control, Screening, Toxicity, and Regulation of Herbal Drugs. In: Modern Phytomedicine. Turning medicinal plants into drugs. Weinheim: Wiley-VCH GmbH & Co. KGaA, 2006: 25–57.
5. Practitioners of Western herbal medicine and their practice in the UK: beginning to sketch the profession;Nissen;Complement Ther Clin Pract,2010