1. Aging, Rehabilitation and Geriatric Care Research Centre, Lawson Health Research Institute; St. Joseph's Parkwood Hospital; London Ontario Canada
2. Vascular Surgery at Centre hospitalier de l'Université de Sherbrooke; Université de Sherbrooke; Sherbrooke Québec Canada
3. Critical & Chronic Care Solutions Division; 3M Canada Company; London Ontario Canada
4. Division of Dermatology and Cutaneous Sciences, University Dermatology Centre; University of Alberta; Edmonton Alberta Canada