N Steen

Design and use of questionnaires: a review of best practice applicable to surveys of health service staff and patients.

E McColl, L Thomas, J. Bond, 2001, Health technology assessment.

Analysis of cluster randomized trials in primary care: a practical approach.

M Eccles, M K Campbell, J Mollison, 2000, Family practice.

Experimental and quasi-experimental designs for evaluating guideline implementation strategies.

M Eccles, J. Grimshaw, M. Eccles, 2000, Family practice.