1. IMS. IMS health lowers 2009 global pharmaceutical market forecast to 2.5–3.5 percent growth, http://getir.net/za42; 2009.
2. Public Citizen. 2002 Drug industry profits: hefty pharmaceutical company margins dwarf other industries. Washington: Public Citizen's Congress Watch, 2003:6.
3. Kaiser Foundation. Trends in promotional spending for prescription drugs, 1996–2007, http://facts.kff.org/chart.aspx?ch=225; 2009.
4. No more free lunches;Abbasi;BMJ,2003
5. Unhealthy spin;Burton;BMJ,2003