Name Info Provider Link
Dietary Supplements free resource MedlinePlus Health Information https://medlineplus.gov/dietarysupplements.html
subscription/membership/fee required Taylor & Francis https://www.tandfonline.com/doi/full/10.3109/09637486.2014.986073
Full text from free resource Institutional Repository of University of Modena and Reggio Emilia (IRIS UNIMORE) https://iris.unimore.it/retrieve/handle/11380/1061531/146188/Corsietal_2015.pdf