The formulary files. PBMs get thumbs up from satisfied customers.
D003253:Consultants / Q000145:classification*; D003258:Consumer Behavior; D016568:Drugs, Generic; D005569:Formularies as Topic; D006264:Health Benefit Plans, Employee; D006801:Humans; D007356:Insurance, Pharmaceutical Services; D014481:United States
D016568:Drugs, Generic