Alison R McGinnis

Why older people do not participate in leisure time physical activity: a survey of activity levels, beliefs and deterrents.

M. Mcmurdo, B. Williams, E. Alder, 2004, Age and ageing.

When "no" might not quite mean "no"; the importance of informed and meaningful non-consent: results from a survey of individuals refusing participation in a health-related research project

M. Mcmurdo, B. Williams, I. Crombie, 2007, BMC Health Services Research.