Angelo G, Drake V, Frei B. Efficacy of Multivitamin/mineral Supplementation to Reduce Chronic Disease Risk: A Critical Review of the Evidence from Observational Studies and Randomized Controlled Trials. Crit Rev Food Sci Nutr. 2014;55(14):1968-1991. doi:10.1080/10408398.2014.912199
França K, Lotti T. Advances In Integrative Dermatology. Oxford: Wiley; :345-347.
Shao Y, He T, Fisher G, Voorhees J, Quan T. Molecular basis of retinol anti-ageing properties in naturally aged human skinin vivo. Int J Cosmet Sci. 2016;39(1):56-65. doi:10.1111/ics.12348