Background: Adverse Events (AEs) due to failure in healthcare procedures are common. These procedures are often evaluated independently. The objectives of this study are to investigate the nature of the failures in healthcare procedures of the surgical patients, assessing the frequency of these failures and preventability, and exploring their consequences, underlying causes, and prevention stra...

Introduction: Schwannoma, or neurilemmoma, is a benign neoplasm of Schwann cells that is extremely rare in the soft palate. Herein we present a case of a soft palate schwannoma presenting with an ulcerated surface and purplish colour in a 12 year-old girl. This report also introduces a successful surgical technique for coverage of the defect left by surgery.

BM71992;305:8 13-7 Nearsightedness (or myopia) has been recognised for more than 2000 years'; during the past several centuries, efforts have been made to determine its cause and to devise adequate treatment. About a quarter of the population in the West is nearsighted,'`3 and this proportion rises to almost 50% in Asia.4 In the United States nearly a quarter of people aged 12-54 are myopic, an...

The ITU Radiocommunication Assembly, considering a) that for the proper planning of terrestrial and Earth-space links it is necessary to have appropriate calculation procedures for assessing the refractivity effects on radio signals; b) that procedures have been developed that allow the calculation of some refractive propagation effects on radio signals on terrestrial and Earth-space links, rec...