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In the validation of medical expert systems, agreement among different human specialists on a random sample of cases may be taken as a substitute to a missing gold standard. Distance measures between pairs of experts, extensively described in previous studies, do not take into account the influence of chance-expected agreement. A weighted kappa index, with(More)
HYPOTHESIS External palpable landmarks can be used to identify the facial nerve trunk quickly and safely. DESIGN Prospective anatomical dissection study. SETTING University department of human anatomy and university hospital. METHODS A total of 40 human cadaver heads (79 facial nerves) were dissected by 2 prosectors, a surgeon with experience in the(More)
Aim. The interaction between vitamin D deficiency and primary hyperparathyroidism (PHPT) is not fully understood. The aim of this study was to investigate whether patients with PHPT from Spain and Sweden differed in vitamin D status and PHPT disease activity before and after surgery. Methods. We compared two cohorts of postmenopausal women from Spain (n =(More)
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