Other

Skin lesions and renal calculi were once considered to be a clinical manifestation of vitamin A deficiency, but no causal association has been demonstrated between vitamin A deficiency and these two conditions.

Fig. 15. Geographic distribution of vitamin A deficiency worldwide (World Health Organization). (Reprinted from ref. 601, with permission of the American Society for Nutritional Sciences.)

Fig. 15. Geographic distribution of vitamin A deficiency worldwide (World Health Organization). (Reprinted from ref. 601, with permission of the American Society for Nutritional Sciences.)

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