![An Evidence-Based Systematic Review of Vitamin A by the Natural Standard Research Collaboration]()
An Evidence-Based Systematic Review of Vitamin A by the Natural Standard Research CollaborationUlbricht, Catherine; Basch, Ethan; Chao, Wendy; Conquer, Julie; Costa, Dawn; Culwell, Samantha; Flanagan, Kelly; Guilford, Jackie; Hammerness, Paul; Hashmi, Sadaf; Isaac, Richard; Rusie, Erica; Serrano, Jill M. Grimes; Ulbricht, Christine; Vora, Mamta; Windsor, Regina C.; Woloszyn, Matt; Zhou, Sara · Journal of Dietary Supplements · 2012