Ward, D. J., Doos, L., & Stevens, A. (2019). Trends in the costs of drugs launched in the UK between 1981 and 2015: An analysis of the launch price of drugs in five disease areas. BMJ Open.

Ward, Derek J., Lucy Doos, و Andrew Stevens. "Trends in the Costs of Drugs Launched in the UK between 1981 and 2015: An Analysis of the Launch Price of Drugs in Five Disease Areas." BMJ Open 2019.

Ward, Derek J., Lucy Doos, و Andrew Stevens. "Trends in the Costs of Drugs Launched in the UK between 1981 and 2015: An Analysis of the Launch Price of Drugs in Five Disease Areas." BMJ Open 2019.