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https://doi.org/10.1007/978-3-642-99736-5nes. Most of them are localized in the gall bladder, whereas common bile duct calculi are rare. In autopsy studies cholelithiasis has been found in 6.2-32% of males and in 12.1-57% of females (Table 3.1). The incidence of bile duct calculi varies between 0.5 and 4.5% (Table 3.2).

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https://doi.org/10.1007/978-3-642-99736-5gnosis of hepatobiliary, pancreatic and gastrointestinal diseases. It may be used for screening purposes as well as in frequent follow-up investigations. Despite this progress there still remain regions that cannot be accurately depicted even with the most sophisticated imaging modalities presently

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https://doi.org/10.1007/978-3-642-99736-5The principle of light amplification by stimulated emission of radiation (laser) has been known for the past 25 years. In 1960 Theodor Maiman succeeded, with the aid of a ruby laser, in producing monochromatic and coherent electro-magnetic radiation..

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Clinical Significance of Molecular Studies of Hepatitis B Virus Infection,cts only humans and certain non-human primates, and belongs to a group of . (hepadna) viruses that includes the hepatitis virus of the woodchuck., the Beechey ground squirrel., and the Pekin duck.. In humans, . infection is associated with a wide spectrum of clinical presentations, ranging from the

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Endoscopic Sonography of the Upper Gastrointestinal Tract: the Present Position,gnosis of hepatobiliary, pancreatic and gastrointestinal diseases. It may be used for screening purposes as well as in frequent follow-up investigations. Despite this progress there still remain regions that cannot be accurately depicted even with the most sophisticated imaging modalities presently

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ome of these topics that deserve particular interest. Research in the field of viral hepatitis has been very intense and successful in recent years. The hepatitis B virus is one of the best explored at the current level of virology. Not only the nucleotid sequence of the viral DNA can be decoded, bu

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