1. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc;Institute of Medicine (US) Panel on Micronutrients,2001
2. 2017 NBJ Supplement Business Report;Nutrition Business Journal,2017
3. Why US Adults Use Dietary Supplements;Bailey;JAMA Intern. Med.,2013