1. University of Western Ontario; London Ontario Canada
2. University of Western Ontario; H33 Health Sciences Addition, Arthur Labatt Family School of Nursing; London Ontario Canada N6A 5C1
3. University of Saskatchewan; Health Sciences Library; Saskatoon, SK Canada
4. University of Saskatchewan; Canadian Centre for Health and Safety in Agriculture; Wing 3E, Royal University Hospital 103 Hospital Drive Saskatoon Saskatchewan Canada S7N 0W8
5. Nuffield Department of Medicine, University of Oxford; Cochrane Dementia and Cognitive Improvement Group; John Radcliffe Hospital (4th Floor, Room 4401C) Headington Oxford UK OX3 9DU