We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMethodological issues in diabetes research. Measuring adherence.AuthorsJohnson SBPublicationDiabetes care, 1992, Vol 15, Issue 11, p1658ISSN0149-5992Publication typearticleDOI10.2337/diacare.15.11.1658