By the numbers. Drugs/purchasing.
D001709:Biotechnology / Q000191:economics / Q000706:statistics & numerical data; D003625:Data Collection; D004345:Drug Industry / Q000191:economics* / Q000706:statistics & numerical data; D011307:Drug Prescriptions / Q000191:economics; D017754:Group Purchasing / Q000706:statistics & numerical data; D019981:Health Care Sector / Q000706:statistics & numerical data* / Q000639:trends; D006801:Humans; D007182:Income / Q000706:statistics & numerical data; D014481:United States