Bell, Robert M. (Robert Michael), 1951-, Management and evaluation of the effects of misclassification in a controlled clinical trial / Robert M. Bell and Stephen P. Klein - 13 pages ; 28 cm. - The Rand paper series; P-7001 . - The Rand paper series; P-7001 . Includes bibliographical references: page 13 Subjects--Topical Terms: Dental surveys. Dental caries--Research.