F. Ackermann

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OBJECTIVES Growing evidence suggests that vitamin D plays a key role in the pathogenesis and progression of autoimmune diseases, including systemic lupus erythematosus (SLE). Recent studies have found an association between lower serum 25-hydroxyvitamin D (25(OH)D) levels and higher SLE activity. We studied the relationship between 25(OH)D levels and(More)
OR's venture into strategy is relatively recent and on examination of the extant literature it appears to have emerged through two relatively independent directions— each adding to a potentially substantial contribution. These directions or roles emanate from (1) a desire to undertake good analysis (echoing Simon's request for procedural rationality: Simon,(More)
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