Ms Sturgeon was giving evidence to the Health Committee on the 31st January 2012. The evidence session was on the same day the University of Sheffield published its remodelling of the impact of a minimum price. It found a minimum alcohol price would have a slightly smaller affect on consumption than first estimated. The University of Sheffield was asked to look at data and suggest a unit figure for a minimum price. The researchers say a minimum price of 45p per unit of alcohol would reduce consumption by 4.3% rather than 4.7%. Ms Sturgeon told the committee: "I firmly and passionately believe minimum pricing will be effective." The health secretary said she had not decided to put a sunset clause into the bill but added she was "open to persuasion." She also confirmed she will be travelling to Brussels to discuss the Scottish government's intentions on minimum pricing with European Commissioners. Before taking evidence from Ms Sturgeon, MSPs quizzed Alan McCreadie from Law Reform and Jim McLean from the Law Society of Scotland . The Law Society of Scotland had noted that while the imposition of a minimum price of alcohol was a devolved matter within the legislative competence of the Scottish Parliament, compatibility with EU Duty Directives must be taken into account.