11.   As a result, government officials say doctors should use the new drug with caution.

12.   As the doctor used an electrosurgery tool, the surgical drapes and the oxygen tubing running into her nose caught fire, according to state records.

13.   At the same time, doctors are using the Internet to extend their practices.

14.   Because it is already approved for use in advanced breast cancer and ovarian cancer, doctors can legally use it for early-stage disease as well.

15.   Because every sobriety doctor here uses his or her own special remedy, Berezhnaya declined to reveal the precise ingredients in hers.

16.   Barron said the doctors will use the August break to lobby Texas lawmakers to oppose the House bill.

17.   Because doctors typically use high doses of existing drugs to try to control the seizures, many patients have severe reactions to the treatment.

18.   Because the head is too large to pass through an undilated cervix, the doctor uses an instrument to collapse the skull and remove its contents.

19.   Both drugs have undergone limited testing and have been used by doctors for years, but neither has received final FDA approval.

20.   Boyd uses the same gas that doctors use on humans for surgery.