Proceedings of a workshop held Dec. 20-21, 1989, supported by the Howard Hughes Medical Institute and the Agency for Health Care Policy and Research of the Dept. of Health and Human Services (grant 5 R09 HS055 26 02)
Includes bibliographical references and index
Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries