The widow of a doctor killed when a woman crashed her car through a Brockton, MA, hospital entrance is suing the driver's five physicians for not informing the driver that the heavy pain killers she was taking made it unsafe to drive. At the time of the crash, the driver told police she was undergoing chemotherapy but that her treatment did not affect her driving. Her lawyer, however, said that that driver had complained to doctors at least 15 times over a four-year period of being light-headed and dizzy from the medication.