In other healthcare news, single-payer advocates continued with a campaign of sit-ins at the offices of major insurance companies Thursday. In Louisville, Kentucky, protesters occupied the entrance to the headquarters of the insurance giant Humana. Meanwhile, four people were arrested at a CareFirst/Blue Cross office in Baltimore. The group Mobilization for Health Care for All says one of the arrested demonstrators, Dr. Margaret Flowers, is refusing to give her name to police and wants to remain in jail until CareFirst executives agree to a public meeting.