Federal and state role in pharmacy compounding and reconstitution : exploring the right mix to protect patients : hearing before the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Eighth Congress, first session, on examining state and federal oversight to ensure the safety and quality of drug compounding--the process of mixing, combining, or altering ingredients to create a customized medication for an individual patient--by pharmacies, October 23, 2003.