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3. Alzheimer's Society, 2015. Drivers for Change: Dementia-friendly Bus Transport in Northumberland. Available from 〈http://www.alzheimers.org.uk/site/scripts/documents_info.php?documentID=2282&pageNumber=5〉.
4. All-cause mortality associated with physical activity during leisure time, work, sports, and cycling to work;Andersen;Arch. Intern. Med.,2000
5. Balcombe, R.J., Vance, C.E., 1998. Information for Bus Passengers: A Study of Needs and Priorities, TRL330. Available from 〈http://www.trl.co.uk/reports-publications/report/?reportid=2493〉.