21.   The incentives can create serious ethical dilemmas for physicians, argue two Harvard School of Public Health researchers in an accompanying editorial in the New England Journal of Medicine.

22.   The story, and the accompanying editorial from Salon Editor David Talbot made a media splash of epic proportions.

23.   An accompanying editorial by Dr. Ellice Lieberman of Harvard Medical School said the work is plausible biologically.

24.   An accompanying editorial by researchers not involved in the work agreed and praised the study as a careful analysis of available data.

25.   An accompanying JAMA editorial notes that other research has suggested cigarette smoke damages cells lining the arteries, making the interior more vulnerable to plaque formation.

26.   But an accompanying editorial said it is unclear whether the risk is linked only to older pills.

27.   Dr. Steven Wolinsky of Northwestern University Medical School, co-author of an accompanying editorial, said the findings of the two studies need to be kept in perspective.

28.   Dr. Barry J. Maron of the Minneapolis Heart Institute Foundation wrote in an accompanying editorial that two factors might have affected the results.

29.   He co-wrote an accompanying editorial.

30.   He co-wrote an accompanying editorial on the leukemia study, which was published Thursday in The New England Journal of Medicine.