CHARLOTTESVILLE, Va. (AP) _ The University of Virginia Board of Visitors is focusing on alcohol as a contributing factor in sexual assaults on campus, with one member calling for a ban on underage drinking.Tuesday’s board meeting was held to discuss allegations of sexual assault that have rocked the campus following a widely circulated article. Rolling Stone published the piece describing a woman’s account of a brutal gang rape and what the magazine called a hidden culture of sexual violence. Board member Bobbie Kilberg’s suggestion to ban underage drinking was met with some resistance from student leaders. Tommy Reid, president of the school’s Inter-Fraternity Council, says a ban could push drinking underground. UVa President Teresa Sullivan has asked police to investigate the alleged rape at the Phi Kappa Psi house, and the school has temporarily banned fraternity activities.