| Eva S Wintergerst Immune-enhancing role of vitamin C and zinc and effect on clinical conditionsEva S Wintergerst Bayer Consumer Care Ltd, Basel, Switzerland Ann Nutr Metab 50:85-94. 2006 Contribution of selected vitamins and trace elements to immune functionEva S Wintergerst Bayer Consumer Care Ltd, Basel, Switzerland Ann Nutr Metab 51:301-23. 2007 Selected vitamins and trace elements support immune function by strengthening epithelial barriers and cellular and humoral immune responsesSilvia Maggini Bayer Consumer Care Ltd, Peter Merian Strasse 84, P O Box, 4002 Basel, Switzerland Br J Nutr 98:S29-35. 2007
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