<p>A Beverly Hills doctor who is a former chairman of the Presidential Advisory Council on HIV and AIDS has surrendered his license to practice medicine in California, effective this week.</p>
<p>Dr. R. Scott Hitt, 45, returned his license to the Medical Board of California, which had suspended it for 60 days in February because of allegations that Hitt sexually molested two patients at his medical office. The board also had placed him on seven years' probation.</p>