Firms spend a half-trillion dollars advertising each year. To model and examine the welfare effects of with heterogeneous goods Grossman Shapiro (1984) informative in monopolistic competition find that is socially excessive for large numbers sellers. However, it has been noted their equilibrium may not exist. We present tractable replacing standard assumption finite number firms continuum firms...

Genome-wide association studies (GWAS) examine a large number of markers across the genome to identify associations between genetic variants and disease. Most published studies examine only single markers, which may be less informative than considering multiple markers and multiple genes jointly because genes may interact with each other to affect disease risk. Much knowledge has been accumulat...

BACKGROUND The current study was conducted as part of a research project into the evaluation and assessment of healthcare provision and education in Chronic Fatigue Syndrome (CFS). One aim of the study was the development of informative and educational literature for both General Practitioners (GP) and sufferers. Issues such as diagnosis, management and treatment of the syndrome should be inclu...