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Eight accidental kidney biopsies in psoriatics were obtained together with 429 liver biopsies. None of the biopsies showed signs of renal damage. All patients had severe psoriasis, six had been treated with methotrexate for 1-2-6 years, receiving total dosages from 660 to 1757 g.
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Zachariae et al. (1976) studied this question.
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