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  1. pdfNLM Technical Bulletin, no.33-44 
    https://www.nlm.nih.gov/.../nlmarchives/techbull/33-44-1972.pdf
    ... GRANULOMA, LETHAL MIDLINE (C5) GRANULOMA, REPARATIVE GIANT CELL HALITOSIS HEMORRHAGE, ORAL (C4) MOUTH BREATHING (C5) TOOTHACHE (C4) ... XR CYTOPATHOGENIC EFFECT, VIRAL Page 629 Delete Cross Reference: THIOTHIXENE see under XANTHENES (D2) Page 682 Delete ...
  2. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... 888.821.414 Gagging C23.888.821.475 Halitosis C23.888.821.525 Heartburn C23.888.821. ... 673 Quartz Crystal Microbalance Techniques E05.978.808 Reference Standards E05.978.808.249 Fiducial Markers E05. ...