Gunnell, D., Irvine, D., Wise, L., Davies, C., & Martin, R. M. (2009). Varenicline and suicidal behaviour: a cohort study based on data from the General Practice Research Database. Bmj. http://doi.org/10.1136/bmj.b3805
Gompels, M., Michael, S., Davies, C., Jones, T., Macleod, J., & May, M. (2019). Trends in HIV testing in the UK primary care setting: a 15-year retrospective cohort study from 2000 to 2015. BMJ Open. http://doi.org/10.1136/bmjopen-2018-027744
