Interpreting interventions to improve drug use using administrative databases.
Shorr
Ronald I
RI
D000368:Aged; D019992:Databases as Topic; D011307:Drug Prescriptions / Q000706:statistics & numerical data*; D004363:Drug Utilization / Q000706:statistics & numerical data*; D006801:Humans; D009864:Ontario; D010601:Pharmacology, Clinical