Aizawl, Jan 11 : Mizoram governor today extended the term of Study Group, to study the impact of prohibition, till March 31 this year, an official statement said. The Study Group could not complete its report and recommendation as the sub-group under it and a research team of Mizoram University were yet to submit respective findings. The dry law was in force in the state since February 20, 1997 and a number of people belonging to cross sections of society, except the church leaders, expressed opinion that prohibition was a failure and did more damage than good to the society. There were, however, many people, especially church leaders, who felt that prohibition, in this Christian-dominated state, was good and successful.