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OBJECTIVE The annual outbreak of influenza is one of the major causes of morbidity and mortality among the elderly population around the world. While there is an annual vaccine available to prevent or reduce the incidence of disease, not all older people in Korea choose to be vaccinated. There have been few previous studies to examine the factors(More)
INTRODUCTION The purpose of this study was to determine factors and clinical situations that influence an endodontist's decision to use guided tissue regeneration (GTR) techniques during endodontic root-end surgery. METHODS An invitation to participate in a web-based survey was e-mailed to 3,750 members of the American Association of Endodontists. Data(More)
Aging is associated with an increased incidence of heart failure, but the existence of an age-related cardiomyopathy remains controversial. Differences in strain, age and technique of measuring cardiac function differ between experiments, confounding the interpretation of these studies. Additionally, the structural and genetic profile at the onset of heart(More)
BACKGROUND Posterior retroperitoneoscopic adrenalectomy (PRA) is a safe and effective approach to adrenalectomy, offering less pain and faster recovery than open or laparoscopic surgery. Although the popularity of PRA is increasing, few surgical centres have extensive experience with the procedure. The ideal approach to achieve proficiency with any new(More)
Enlarged cerebral ventricles are consistently detected in patients suffering from schizophrenia. Several workers report more detailed association of this disease and particular brain areas. In order to assist these efforts at localization we define a tiled-out map of the ventricular surface, a template, based on specialized crest lines that we term: ridge(More)
Six6, a sine oculis homeobox protein, plays a crucial and conserved role in the development of the forebrain and eye. To understand how the expression of Six6 is regulated during embryogenesis, we screened ~250 kb of genomic DNA encompassing the Six6 locus for cis-regulatory elements capable of directing reporter gene expression to sites of Six6(More)
The internet contains billions of documents. We study if there is useful information in the frequency with which different topics are written about. Based on the premise that the occurrence of an event increases its textual frequency, we assess whether internet document-frequency can capture cross-sectional variation in the occurrence-frequency of social(More)
Hepatocellular carcinoma (HCC) <2 cm in diameter has a favorable prognosis. Therefore surgical resection of small HCC is associated with good outcomes. However, the predisposing factors of prognosis following resection of HCC remain ill-defined. The aims of the present study were to identify the clinicopathologic characteristics and outcomes of patients(More)
Concomitant severe metabolic alkalosis, hypernatremia, and kidney failure pose a therapeutic challenge. Hemodialysis to correct azotemia and abnormal electrolytes results in rapid correction of serum sodium, bicarbonate, and urea but presents a risk for dialysis disequilibrium and brain edema. We describe a patient with Zollinger-Ellison syndrome with(More)