(2002). Association between migraine and asthma: matched case-control study. Br J Gen Pract..
(2003). Early-life exposure to antibacterials and the subsequent development of hayfever in childhood in the UK: case-control studies using the General Practice Research Database and the Doctors\textquoteright Independent Network. Clin Exp Allergy..
(2003). Implications of the problem orientated medical record (POMR) for research using electronic GP databases: a comparison of the Doctors Independent Network Database (DIN) and the General Practice Research Database (GPRD). BMC Fam Pract. http://doi.org/10.1186/1471-2296-4-14.
(2004). A comparison of the recording of 30 common childhood conditions in the Doctor\textquoterights Independent Network and General Practice Research Databases. Health Stat Q..
(2004). Developing a large electronic primary care database (Doctors\textquoteright Independent Network) for research. Int J Med Inform. http://doi.org/10.1016/j.ijmedinf.2004.02.002.
(2007). Vaccinations, infections and antibacterials in the first grass pollen season of life and risk of later hayfever. Clin Exp Allergy. http://doi.org/10.1111/j.1365-2222.2007.02697.x.
(2008). Infections presenting for clinical care in early life and later risk of hay fever in two UK birth cohorts. Allergy. http://doi.org/10.1111/j.1398-9995.2007.01599.x.
(2018). Are noise and air pollution related to the incidence of dementia? A cohort study in London, England. BMJ Open. http://doi.org/10.1136/bmjopen-2018-022404.
(2021). The rising tide of dementia deaths: triangulation of data from three routine data sources using the Clinical Practice Research Datalink. BMC Geriatr. http://doi.org/10.1186/s12877-021-02306-7.
(2021). Risk factors for excess all-cause mortality during the first wave of the COVID-19 pandemic in England: A retrospective cohort study of primary care data. PLoS One. http://doi.org/10.1371/journal.pone.0260381.