Phillips, C., Mukherjee, M., Gupta, R., Farr, A., Heaven, M., Stoddart, A., . . . Farr, A. (2014). Estimating the incidence, prevalence and true cost of asthma in the UK: Secondary analysis of national stand-alone and linked databases in England, Northern Ireland, Scotland and Wales--a study protocol. BMJ Open, 4(11), p. e006647. doi:10.1136/bmjopen-2014-006647

Phillips, Ceri, et al. "Estimating the Incidence, Prevalence and True Cost of Asthma in the UK: Secondary Analysis of National Stand-alone and Linked Databases in England, Northern Ireland, Scotland and Wales--a Study Protocol." BMJ Open 4, no. 11 (2014): e006647.

Phillips, Ceri, et al. "Estimating the Incidence, Prevalence and True Cost of Asthma in the UK: Secondary Analysis of National Stand-alone and Linked Databases in England, Northern Ireland, Scotland and Wales--a Study Protocol." BMJ Open 4.11 (2014): e006647.