br08303  Anatomical Therapeutic Chemical (ATC) classification
     br08302  USP drug classification
     br08301  Therapeutic category of drugs in Japan
     br08303_target  Anatomical Therapeutic Chemical (ATC) classification + Target
     br08302_target  USP drug classification + Target
     br08301_target  Therapeutic category of drugs in Japan + Target
     br08303_enzyme  Anatomical Therapeutic Chemical (ATC) classification + Enzyme
     br08302_enzyme  USP drug classification + Enzyme
     br08301_enzyme  Therapeutic category of drugs in Japan + Enzyme
     br08303_ndc  Anatomical Therapeutic Chemical (ATC) classification + Product (NDC)
     br08313  Classification of Japanese OTC drugs
     br08312  Risk category of Japanese OTC drugs
     br08316  Pharmaceutical additives in Japan
     br08310  Target-based classification of drugs