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BACKGROUND Vitamin A supplements have been recommended in pregnancy to improve outcomes that include maternal mortality and morbidity. OBJECTIVES To review the effectiveness of vitamin A supplementation during pregnancy, alone or in combination with other supplements, on maternal and newborn clinical and laboratory outcomes. SEARCH STRATEGY We searched(More)
Human peripheral blood phagocytic cells were prepared in large quantities utilizing their chemotactic characteristics. Cells were isolated using an enlarged version of the Boyden chemotactic chamber and were collected after migrating through a Millipore membrane into a solution containing chemotactic factor. Chemotactic factors consisted of normal human(More)
Objective To test the effectiveness of training in the use of closed-circuit television (CCTV) on task performance in visually impaired patients. Methods In a multicenter masked randomized controlled trial 122 patients were assigned either to a treatment group that received instructions from the supplier plus outpatient CCTV training (n=62), or to a control(More)
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