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BACKGROUND Genetic factors are clearly attributed to the susceptibility of ankylosing spondylitis (AS). The human leucocyte antigen (HLA)-B27 proved to be the very useful marker for diagnosing AS. The aim of this study was to determine the prevalence of HLA-B27 subtypes in Taiwan and to investigate whether these subtypes may be of help in predicting the(More)
In principle these three objectives can be accomplished through the use of the data modeling, querying and indexing facilities of a database management system respectively. However, particular characteristics of a messaging environment must be taken into account when dealing with these issues. More specifically, existing data models (e.g., relational or(More)
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