| D008722 |
Methods |
A series of steps taken in order to conduct research. |
Techniques,Methodological Studies,Methodological Study,Procedures,Studies, Methodological,Study, Methodological,Method,Procedure,Technique |
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| D011446 |
Prospective Studies |
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. |
Prospective Study,Studies, Prospective,Study, Prospective |
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| D006500 |
Hepatic Duct, Common |
Predominantly extrahepatic bile duct which is formed by the junction of the right and left hepatic ducts, which are predominantly intrahepatic, and, in turn, joins the cystic duct to form the common bile duct. |
Common Hepatic Duct,Hepatic Duct,Common Hepatic Ducts,Duct, Common Hepatic,Duct, Hepatic,Ducts, Common Hepatic,Ducts, Hepatic,Hepatic Ducts,Hepatic Ducts, Common |
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| D006801 |
Humans |
Members of the species Homo sapiens. |
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man |
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| D001650 |
Bile Duct Neoplasms |
Tumors or cancer of the BILE DUCTS. |
Bile Duct Cancer,Cancer of Bile Duct,Cancer of the Bile Duct,Neoplasms, Bile Duct,Bile Duct Cancers,Bile Duct Neoplasm,Cancer, Bile Duct,Cancers, Bile Duct,Neoplasm, Bile Duct |
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| D012189 |
Retrospective Studies |
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. |
Retrospective Study,Studies, Retrospective,Study, Retrospective |
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