Cook, E. J., Randhawa, G., Large, S., Guppy, A., Chater, A. M., & Ali, N. (2014). Barriers and facilitators to using NHS Direct: A qualitative study of ‘users’ and ‘non-users’. BMC Health Serv Res.

Cook, Erica J., Gurch Randhawa, Shirley Large, Andy Guppy, Angel M. Chater, ja Nasreen Ali. "Barriers and Facilitators to Using NHS Direct: A Qualitative Study of ‘users’ and ‘non-users’." BMC Health Serv Res 2014.

Cook, Erica J., et al. "Barriers and Facilitators to Using NHS Direct: A Qualitative Study of ‘users’ and ‘non-users’." BMC Health Serv Res 2014.