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Popp, Albrecht W; Isenegger, Juerg; Buergi, Elizabeth M; Buergi, Ulrich; Lippuner, Kurt (2006). Glucocorticosteroid-induced spinal osteoporosis: scientific update on pathophysiology and treatment. European spine journal, 15(7), pp. 1035-49. Berlin: Springer-Verlag 10.1007/s00586-005-0056-x
