Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleExamples abound of gaps in medical knowledge because of groups excluded from scientific study.AuthorsCotton, PSubjectsBIOTRANSFORMATION (Metabolism); DRUG therapy; EXPERIMENTAL design; HEART diseases; MENSTRUATION; POPULATION; SEX distributionPublicationJAMA: Journal of the American Medical Association, 1990, Vol 263, Issue 8, p1051ISSN0098-7484Publication typejournal articleDOI10.1001/jama.263.8.1051