1. Too soon to market;Dent;BMJ,1997
2. Who will pay for R&D?;Wechsler;Appl Clin Trials,1994
3. The cost of innovation in the pharmaceutical industry;DiMasi;J Health Econ,1991
4. Roche withdraws new heart treatment;Hall;Financial Times,1998
5. The healing process;Bennett;Sunday Telegraph,1998