The implications of choice: prescribing generic or preferred pharmaceuticals improves medication adherence for chronic conditions.
Shrank WH, Hoang T, Ettner SL, Glassman PA, Nair K, DeLapp D, Dirstine J, Avorn J, Asch SM. The implications of choice: prescribing generic or preferred pharmaceuticals improves medication adherence for chronic conditions. Arch Intern Med. 2006 Feb 13; 166(3):332-7.