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  1. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... 925 von Hippel-Lindau Disease C14.907.079 Angioedema C14.907.079.500 Angioedemas, Hereditary C14.907.079.500.500 Hereditary Angioedema Type III C14.907.079.500.750 Hereditary ...
  2. pdf2020NewMeSHheadingsSingleColumn.pdf 
    https://www.nlm.nih.gov/.../2020NewMeSHheadingsSingleColumn.pdf
    ... 438.475.023 Chronic Urticaria Wheals and/or angioedema presented with daily symptoms lasting for more than ... as a factor in the cause, distribution, and prevention of disease and injury. (From https://read.dukeupress. ...