Canadian Journal of Surgery. 58(4 Suppl 2):S175, AUGUST 2015 Issn Print: 0008-428X Publication Date: August 2015 Print 05 Regional variation in the use of surgery in Ontario A.E. Feinberg;J. Porter;R. Saskin;J. Rangrej;D.R. Urbach; + Author Information From University or Toronto, Toronto, Ont. Checking for direct PDF access through Ovid Abstract Abstract unavailable for this article.