31.   Corporate spin doctors can also use some polish.

32.   Different doctors use different surgical techniques, and there have been no major, comparative studies to determine which work best.

33.   Doctors are using heparin in a range of doses on hundreds of thousands of heart attack patients, the study leaders said.

34.   Doctors now use the eponym almost daily on rounds and it appears in virtually every medical textbook, even health care books written for the public.

35.   Doctors sometimes use ultrasound to more accurately determine fetal development, which is then converted into a theoretical age.

36.   Doctors use blood tests to count these disease-fighting cells, and gauge how far AIDS has gone in attacking the immune system.

37.   Doctors use hypnotism and drugs to help patients with problems staying asleep, but the long-term effects are not well understood.

38.   Doctors use mifepristone in combination with a prostaglandin, usually Misoprostol, an ulcer drug.

39.   Doctors used to think that little could be done for stroke victims, and that a policy of watching and waiting was sufficient.

40.   Doctors currently use mammography, magnetic resonance imaging and x-rays to spot cancer recurrence.