J. S. Hopkins

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BACKGROUND Innovations in shunt technology and neuroendoscopy have been increasingly applied to shunt management. However, the relative life span of shunts and the etiology of shunt failure have not been characterized recently. METHODS We reviewed the records of all shunting procedures at our institution between January 1992 and December 1998. Independent(More)
BACKGROUND Endoscopic placement of ventriculoperitoneal (VP) shunt catheters in pediatric patients has been increasingly used in an attempt to minimize the unacceptably high rates of revision. Although this procedure carries an increased expense, there is currently no evidence to support an improved long-term outcome. This paper compares the rates of(More)
In many African countries where both Government resources and donor aid for the control of tsetse-transmitted trypanosomiasis are declining, there is an increasing need to identify areas where intervention is most likely to be technically, economically, socially and environmentally sustainable. Activities then can be focused so that the maximum bene ts are(More)
The search for oil reserves offshore is moving into deeper and deeper waters, and crude oil and oil products are being transported across the globe in increasingly larger tankers. As a result, oil spills pose a serious threat to the ecology of the World' s oceans. The amount of oil spilled annually worldwide has been estimated at more than 4.5 million tons.(More)
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