Strokes are the commonest cause of severe permanent physical disability in Britain,' and their care consumes a considerable proportion of acute medical resources. The reported incidence in Britain varies,2 3 but 150 cases per 100 000 a year is a useful approximation for planning. In some areas about 40°o of patients with stroke are admitted to hospital2-4 with some evidence that they are more p...

We present detailed theoretical mass-radius relations for massive white dwarf stars with oxygen-neon cores. This work is motivated by recent observational evidence about the existence of white dwarf stars with very high surface gravities. Our results are based on evolutionary calculations that take into account the chemical composition expected from the evolutionary history of massive white dwa...

Introduction A current debate in palaeoanthropology centres on the issue of modern human origins, particularly the question of when ‘anatomically modern humans’ (AMH) from the African Middle Stone Age (MSA) became fully modern. Fossil Homo in Africa appears to have undergone a morphological transition from a more primitive form (i.e. Homo heidelbergensis/Homo rhodesiensis) to a more modern form...

Esophageal diverticula are rare findings that have an estimated incidence of 1 per 500 000 people per year, even though acute upper gastrointestinal bleeding is a relatively common medical emergency with an incidence of up to 150 per 100 000 people per year and a mortality rate of 7-14%. An 83-year-old man presented with hematemesis and melena. Urgent upper endoscopy revealed an esophageal dive...

La acidosis láctica es una reacción adversa relacionada con metforminay la principal etiología de metabólica. Se ha reportado incidencia anual 4,3 casos por cada 100 000 usuarios este medicamento, lo cual cifra considerable teniendo en cuenta que cerca 150 millones pacientes diagnosticados diabetes mellitus tipo 2 usan el medicamento. reporta caso paciente 81 años manejada metformina que, sumad...

Although anecdotal evidence suggests that HIV infections in Mexico were occurring in 1981, the first cases of AIDS in Mexico were documented in 1983. Since then, approximately 50 000 cases of AIDS have been reported nationwide and it is estimated that there are approximately 150 000 HIV-infected persons living in Mexico [1,2]. While it could be argued that there is some underreporting of AIDS i...

objective: the main objective of this research was the economic valuation of public library services using the contingent valuation. although, estimating the average willingness to pay for public library service, demographics on the willingness to pay, and economic valuation and pricing public library services were other objectives that investigated in this study. methodology: explanatory varia...

The Burden of Stroke In the United States, '600 000 persons experience a clinical stroke (first or recurrent) annually.1 Although the case-fatality rate has declined over the past decades, it is still high. The annual death toll is '150 000, which qualifies stroke as the third leading cause of death, behind coronary heart disease (CHD) and cancer. The clinical sequelae of a stroke are often dev...