Migration and allergic diseases in a rural area of a developing country.

Submitted by Ana Maria Fiscina Sampaio ([email protected]) on 2017-02-10T17:02:09Z No. of bitstreams: 1 Rodriguez A Migration and allergic....pdf: 149809 bytes, checksum: dd2e77d239dd95d5fbf01198a195d13a (MD5)Approved for entry into archive by Ana Maria Fiscina Sampaio ([email protected]) on 2017-02-10T17:40:30Z (GMT) No. of bitstreams: 1 Rodriguez A Migration and allergic....pdf: 149809 bytes, checksum: dd2e77d239dd95d5fbf01198a195d13a (MD5)Made available in DSpace on 2017-02-10T17:40:30Z (GMT). No. of bitstreams: 1 Rodriguez A Migration and allergic....pdf: 149809 bytes, checksum: dd2e77d239dd95d5fbf01198a195d13a (MD5) Previous issue date: 2016Wellcome Trust (grant nos. 072405/Z/03/Z and 088862/Z/09/Z).Laboratorio de Investigaci on FEPIS. Quinind e, Esmeraldas Province, Ecuador / Faculty of Epidemiology and Population Health. London School of Hygiene and Tropical Medicine. London, United Kingdom / Universidad Internacional del Ecuador. Facultad de Ciencias Medicas de la Salud y la Vida. Quito, EcuadorLaboratorio de Investigaci on FEPIS. Quinind e, Esmeraldas Province, EcuadorLaboratorio de Investigaci on FEPIS. Quinind e, Esmeraldas Province, EcuadorFaculty of Epidemiology and Population Health. London School of Hygiene and Tropical Medicine. London, United KingdomFundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil / Universidade Federal da Bahia. Instituto de Saúde Coletiva. Salvador, BA, BrasilLaboratorio de Investigaci on FEPIS. Quinind e, Esmeraldas Province, Ecuador / Universidad Internacional del Ecuador. Facultad de Ciencias Medicas de la Salud y la Vida. Quito, Ecuador / St George’s University of London. Institute of Infection and Immunity. London, United Kingdo

Traumatic bone cyst of the mandible of possible iatrogenic origin: a case report and brief review of the literature

The traumatic bone cyst (TBC) is an uncommon nonepithelial lined cavity of the jaws. The lesion is mainly diagnosed in young patients most frequently during the second decade of life. The majority of TBCs are located in the mandibular body between the canine and the third molar. Clinically, the lesion is asymptomatic in the majority of cases and is often accidentally discovered on routine radiological examination usually as an unilocular radiolucent area with a "scalloping effect". The definite diagnosis of traumatic cyst is invariably achieved at surgery. Since material for histologic examination may be scant or non-existent, it is very often difficult for a definite histologic diagnosis to be achieved. We present a well documented radiographically and histopathologically atypical case of TBC involving the ramus of the mandible, which is also of possible iatrogenic origin. The literature is briefly reviewed

Meta-analysis of the relation between European and American smokeless tobacco and oral cancer

<p>Abstract</p> <p>Background</p> <p>Smokeless tobacco is often referred to as a major contributor to oral cancer. In some regions, especially Southeast Asia, the risk is difficult to quantify due to the variety of products, compositions (including non-tobacco ingredients) and usage practices involved. In Western populations, the evidence of an increased risk in smokeless tobacco users seems unclear, previous reviews having reached somewhat differing conclusions. We report a detailed quantitative review of the evidence in American and European smokeless tobacco users, and compare our findings with previous reviews and meta-analyses.</p> <p>Methods</p> <p>Following literature review a meta-analysis was conducted of 32 epidemiological studies published between 1920 and 2005 including tests for homogeneity and publication bias.</p> <p>Results</p> <p>Based on 38 heterogeneous study-specific estimates of the odds ratio or relative risk for smokeless tobacco use, the random-effects estimate was 1.87 (95% confidence interval 1.40–2.48). The increase was mainly evident in studies conducted before 1980. No increase was seen in studies in Scandinavia. Restricting attention to the seven estimates adjusted for smoking and alcohol eliminated both heterogeneity and excess risk (1.02; 0.82–1.28). Estimates also varied by sex (higher in females) and by study design (higher in case-control studies with hospital controls) but more clearly in studies where estimates were unadjusted, even for age. The pattern of estimates suggests some publication bias. Based on limited data specific to never smokers, the random-effects estimate was 1.94 (0.88–4.28), the eight individual estimates being heterogeneous and based on few exposed cases.</p> <p>Conclusion</p> <p>Smokeless tobacco, as used in America or Europe, carries at most a minor increased risk of oral cancer. However, elevated risks in specific populations or from specific products cannot definitely be excluded.</p

Balanced Aspect Ratio Trees and Their Use for Drawing Very Large Graphs

We describe a new approach for cluster-based drawing of large graphs, which obtains clusters by using binary space partition (BSP) trees. We also introduce a novel BSP-type decomposition, called the balanced aspect ratio (BAR) tree, which guarantees that the cells produced are convex and have bounded aspect ratios. In addition, the tree depth is O(log n), and its construction takes O(n log n) time, where n is the number of points. We show that the BAR tree can be used to recursively divide a graph embedded in the plane into subgraphs of roughly equal size, such that the drawing of each subgraph has a balanced aspect ratio. As a result, we obtain a representation of a graph as a collection of O(log n) layers, where each succeeding layer represents the graph in an increasing level of detail. The overall running time of the algorithm is O(n log n+m+D0(G)), where n and m are the number of vertices and edges of the graph G, andD0(G) is the time it takes to obtain an initial embedding of G in the plane. In particular, if the graph is planar each layer is a graph drawn with straight lines and without crossings on the n×n grid and the running time reduces to O(n log n)