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  1. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... 888.885.328 Erythema C23.888.885.344 Flushing C23.888.885.375 Jaundice C23.888.885. ...
  2. pdf141-152-1981.pdf 
    https://www.nlm.nih.gov/.../nlmarchives/techbull/141-152-1981.pdf
    ... 81 a geographic qualifier,e.g., Queens College (Flushing, N.Y.),. The correct for- mat is appearing ... 1981 FREQUENCY Thyroid *Gastrointestinal System Esophagus Stomach Pancreas Liver/Gall Bladder Colorectal Gastrointestinal-unspecified *Genitourinary System Bladder ...