1. Trends in the use of complementary health approaches among adults: United States, 2002‐2012;Clarke TC;Natl Health Stat Report,2015
2. Complementary and alternative medicine use among adults and children: United States;Barnes PM;Natl Health Stat Report,2007
3. Dietary supplementation is more prevalent among adults with arthritis in the United States population
4. Sales of herbal dietary supplements in US increased 7.5% in 2015 consumers spent $6.92 billion on herbal supplements in 2015, marking the 12th consecutive year of growth;Smith T;HerbalGram,2016
5. Adverse interactions between herbal and dietary substances and prescription medications: a clinical survey;Bush TM;Altern Ther Health Med,2007