Fig. 2

RDA reference values of vitamin A (as RAE). References according to D-A-CH [87], DGE [88], NIH [83] and the NRVs-R of FAO/WHO [86]. D-A-CH, Deutschland, Austria, Confoederatio Helvetica (eng. GSA, Germany, Switzerland, Austria); DGE, Deutsche Gesellschaft für Ernährung (eng. German Nutrition Society); FAO, Food and Agriculture Organization; NIH, National Institutes of Health; NRV-R, Nutrient Reference Value-Requirement; RAE, Retinol Activity Equivalents; RDA, Recommended Daily Allowance; WHO, World Health Organization