Standard & Poor's Announces Changes In The S&P/TSX Canadian Indices

Standard & Poor's will make the following changes in the S&P/TSX Canadian Indices:

• The shares of CRH Medical Corporation (TSXVN:CRM) will be removed from the S&P/TSX Venture Composite Index after the close of Wednesday, May 30, 2012. The company will graduate to trade on TSX under the new ticker symbol "CRH".

Company additions to and deletions from an S&P equity index do not in any way reflect an opinion on the investment merits of the company.