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We show, under the assumption that factoring is hard, that a model of PV exists in which the polynomial hierarchy does not collapse to the linear hierarchy; that a model of S2 exists in which NP is not in the second level of the linear hierarchy; and that a model of S2 exists in which the polynomial hierarchy collapses to the linear hierarchy and in which the strict version of PH does not colla...
359 the accumulation of T lymphocytes, mononuclear phagocytes, and granulomas in affected tissues.6 Alveolar macrophages (AMs) are the main lung cell population that serves as the first line of cellular defense against pollutants owing to their antigen presenting function and phagocytic properties.7 Granulomas are closed, centrally organized collections of macrophages and epithelial cells surro...
BACKGROUND Dental restoration is an integral part of head and neck cancer reconstruction. METHODS We evaluated the success rate of osseointegrated implants in patients with head and neck cancer, comparing outcomes between implants placed in fibula free flaps to those placed in native mandibular and maxillary bone. RESULTS A total of 1132 implants were placed in 246 patients. The overall imp...
BACKGROUND AND PURPOSE Although stroke units reduce mortality and institutionalization, their comparative cost-effectiveness is unknown. METHODS Healthcare, social services, and informal care costs were compared for 447 acute stroke patients randomly assigned to stroke unit, stroke team, or domiciliary stroke care. Prospective and retrospective methods were used to identify resource use over ...
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