Bilateral avascular necrosis of both hips and both shoulders in a case with systemic lupus erythematosus: What should we blame, steroid or secondary antiphospholipid syndrome?

Citation:
, "Bilateral avascular necrosis of both hips and both shoulders in a case with systemic lupus erythematosus: What should we blame, steroid or secondary antiphospholipid syndrome? ", APLAR Journal of Rheumatology, vol. 10(1): 69-71., 2007.