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This book shows how vitamin A deficiency – before the vitamin was known to scientists – affected millions of people throughout history. It is a story of sailors and soldiers, penniless mothers, orphaned infants, and young children left susceptible to blindness and fatal infections. We also glimpse the fortunate ones who, with ample vitamin A-rich food, escaped this elusive stalker. Why were people going blind and dying? To unravel this puzzle, scientists around the world competed over the course of a century. Their persistent efforts led to the identification of vitamin A and its essential role in health. As a primary focus of today’s international public health efforts, vitamin A has ...
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The difficulties in determining the quality of information on the Internet--in particular, the implications of wide access and questionable credibility for youth and learning. Today we have access to an almost inconceivably vast amount of information, from sources that are increasingly portable, accessible, and interactive. The Internet and the explosion of digital media content have made more information available from more sources to more people than at any other time in human history. This brings an infinite number of opportunities for learning, social connection, and entertainment. But at the same time, the origin of information, its quality, and its veracity are often difficult to asses...
This textbook provides an up-to-date summary of the scientific basis, assessment for and provision of anaesthesia throughout pregnancy and labour. It is divided into nine sections including physiology, assessment, complications and systemic disease.
The field of epilepsy and behavior has grown considerably in the past number of years, reflecting advances in the laboratory and clinic. Behavioral Aspects of Epilepsy: Principles and Practice is the definitive text on epilepsy behavioral issues, from basic science to clinical applications, for all neurologists, psychosocial specialists, and researchers in the fields of epilepsy, neuroscience, and psychology/psychiatry. Behavioral aspects of epilepsy include a patient's experiences during seizures, his or her reaction during and between seizures, the frequency of episodes and what can be determined from the number of seizures. With contributions by dozens of leading international experts, th...