Publication Type: Journal Article Authors: Doyle, M.; While, D.; Mok, P. L.; Windfuhr, K.; Ashcroft, D. M.; Kontopantelis, E.; Chew-Graham, C. A.; Appleby, L.; Shaw, J.; Webb, R. T. Source: BMC Fam Pract, Volume 17, p.106 (2016)