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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: J Biomed Inform. 2017 Jul 16;73:30–42. doi: 10.1016/j.jbi.2017.07.013

Table 6.

Level distribution of drug ingredient concepts going upwards from the leaf level

Level (In this Table Level 0 Represents Leaves) # of Drug Ingredient Concepts
Level 0 2020
Level 1 623
Level 2 20
Level 3 1