31.   The study appears in the Online Journal of Current Clinical Trials, an electronic publication.

32.   The study appears this month in The Archives of Pediatric and Adolescent Medicine, published by the American Medical Association.

33.   The study appeared in the journal Pediatrics.

34.   The study appeared in a recent British Journal of Sports Medicine and was prepared by doctors at two British hospitals.

35.   The study appears in the current issue of Archives of General Psychiatry.

36.   The study appears in the current issue of the journal Science.

37.   The study appears in the January issue of the American Journal of Public Health.

38.   The study appears in the January issue of The Annals of Emergency Medicine.

39.   The study appears in the Journal of the American Medical Association, published Wednesday.

40.   The study appears in the November issue of the journal Stroke.