Fitzsimmons, D., Roukas, C., Quayyum, Z., Patel, A., Phillips, C., & Hounsome, N. (2020). Developing core economic parameter sets for asthma studies: A realist review and an analytical framework. BMJ Open, 10(10), p. e037889. doi:10.1136/bmjopen-2020-037889

Fitzsimmons, Deborah, Chris Roukas, Zahidul Quayyum, Anita Patel, Ceri Phillips, and Natalia Hounsome. "Developing Core Economic Parameter Sets for Asthma Studies: A Realist Review and an Analytical Framework." BMJ Open 10, no. 10 (2020): e037889.

Fitzsimmons, Deborah, et al. "Developing Core Economic Parameter Sets for Asthma Studies: A Realist Review and an Analytical Framework." BMJ Open 10.10 (2020): e037889.