Hutchings, H., Cheung, W., Williams, J., Cohen, D., Longo, M., & Russell, I. (2005). Can electronic routine data act as a surrogate for patient-assessed outcome measures? International Journal of Technology Assessment in Health Care, 21(1), pp. 138-143.

Hutchings, Hayley, WY Cheung, JG Williams, D. Cohen, MF Longo, and IT Russell. "Can Electronic Routine Data Act As a Surrogate for Patient-assessed Outcome Measures?" International Journal of Technology Assessment in Health Care 21, no. 1 (2005): 138-143.

Hutchings, Hayley, et al. "Can Electronic Routine Data Act As a Surrogate for Patient-assessed Outcome Measures?" International Journal of Technology Assessment in Health Care 21.1 (2005): 138-143.