http://www.w3.org/ns/prov#value | - Systemic infection such as AIDS, HIV, and active hepatitis; Significant metabolic disease that in the surgeon's opinion might compromise bone growth such as osteoporosis or osteomalacia; Taking medication for the prevention of osteoporosis; Circulatory, cardiac, or pulmonary problems that could cause excessive surgical risk; Active malignancy; Nondiscogenic source of symptoms (e.g., tumor, etc.);
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