1,Pharmaceutical policies: effects of cap and co-payment on rational drug use.
Austvoll-Dahlgren A, Aaserud M, Vist G, Ramsay C, Oxman AD, Sturm H, K?sters JP, Vernby A..
Cochrane Database Syst Rev. 2008 Jan 23;(1):CD007017.
2,Pharmaceutical policies: effects of financial incentives for prescribers.
Sturm H, Austvoll-Dahlgren A, Aaserud M, Oxman AD, Ramsay C, Vernby A, K?sters JP.
Cochrane Database Syst Rev. 2007 Jul 18;(3):CD006731.