WASHINGTON (AP) — U.S. regulators have strengthened their warning against use of a once-popular device for gynecologic surgery that can spread unsuspected cancer, saying its risk is only justified in a fraction of patients. The Food and Drug Administration is updating its April safety warning, now saying doctors should not use the devices, called laparoscopic power morcellators, for performing a hysterectomy or removing uterine fibroids "in the vast majority of women.Read more on NewsOK.com