DearSir/Madam, I am writing to inquire about thesub-atmospheric suspension system (Vacuum). I would appreciate to get yourfeedback.  I am preparing a presentationon “TheEvidence-base for Elevated Vacuum in Prostheticsâ€Â for the comingISPO Canada Symposium on 2 and 3rd October 2015. Currently, I am reviewing theliterature and also collecting professionals and amputees’ feedback about thissystem. Considering your experiences and knowledge in the prostheticfield, I would appreciate your time and kind consideration to provide mewith feedback on this system through the following survey link: (http://goo.gl/forms/lFVRdwd9mY).  All responses are confidential andare not isolated in the analysis of final results. Thank you so much for your time andkind help.Yours faithfully,Hossein Gholizadeh, Postdoctoral Fellow, ProsthetistThe Ottawa Hospital Research Institute(OHRI)University of Ottawa
