The Ontario Association of Chiefs of Police (OACP), however, believes the merits of such sites are debatable and should not be used as a rationale for the opening of similar facilities in the Province of Ontario. [...] The purpose of the relevant study by Thomas Kerr and his colleagues was to determine whether the introduction of a supervised injection site in the Downtown Eastside (DTES) area of Vancouver reduced the number of drug-related deaths. [...] In the later case, Kerr and his colleagues evaluated the public order benefits from the Vancouver injection site by examining the period from six weeks before to 12 weeks after the opening of the Insite facility. [...] The results were significant because the research influenced the Supreme Court of Canada decision on September 30, 2011 to order the federal government to give Insite an exemption under the CDSA to continue operations. [...] Although the Committee noted the approximately 220,000 clean injections at Insite, the group stated that overall impact on the total number of injections in the eastside area was minimal.