"This study was supported by Grant No. N0-0D-4-2139 between the National Academies and the National Institutes of Health of the U.S. Department of Health and Human Services"--T.p. verso
Includes bibliographical references (p. 60-61)
Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries