<classify> Dr. Ehud Ur, oo ah borofisar caafimaadka Jaamacada Dalhousie ee ku taalo Halifax, Nova Scotia oo na isla markaas na ka ah gudoomiyaha qaybta bukaanka iyo sayniska Midowga Xanuunka Sokorta Canada ayaa taxadar ka bixiyay inay cilmi baarista wali hor leedahay.  <topic>: disease, research, canada 