ACKNOWLEDGMENTS The accompanying table lists the individuals, with their affiliations, who have so generously given of their time and talents to participate in medical surveys in the Marshall Islands over the past six years. Without their dedicated efforts, the surveys could not have succeeded, and we are most grate- ful to all of them. The senior author would like f.rst to express his gratitude to many peo— ple who have assisted in the preparation of this report or who were actively involved in some of the special studies. In the writing and editing of the report, Dr. Donald Paglia was wost helpful and is largely responsible for writ- ing Sections I, II, and parts of III and IX. At this Laboratory, Drs. E. P. Cronkite and V. P. Bond have provided valuable advice and support. The assis~— tance of Ms. Margaret Dienes in editing and collating the report, the secretar-— ial assistance of Ms. Bernice Armstrong and Ms. G. Callister, the typing and editing assistance of Ms. Denise G. Warren, and the technical assistance of Messrs. William Scott and Peter Heotis and Ms. Veena Naidu are gratefully acknowledged. The people who assisted with or wrote sections of the report are mentioned in the appropriate places. In addition, numerous other individuals and many organizations have given tremendous support to the program over the years, and without their help the program could never have succeeded. It will be possible to list only some of these people who have contributed during the past six years. As noted earlier, when the senior author retired in 1979, Dr. Hugh S. Pratt became program chief until he resigned in the summer of 1980. We are indebted to him for his contributions, including improvement of examinatioa protocol, initiation of data processing, and other improvements in the program. Dr. Pratt was succeeded by Dr. Eugene P. Cronkite, the present pro- gram director, who has been involved with the program since its inception and during his tenure as Chairman of the Medical Department always strongly supported the program and provided ible advice. We gratefully acknowledge the assistance of a number of Brookhaven physicians who have served as resident physicians in the Marshall Islands, including Drs. Konrad Krotrady, William Grant, Knud D. Knudsen, and Roger S. Rittmaster. Dr. and Mrs. Knudsen were in the islands for two tours, and their dedication to the program and assistance are greatly appreciated. Mr. Peter Heotis and Ms. Jenuk Kabua, a Marshallese nurse, have provided great assis~tance in the Marshall Islands for the resident physicians. At BNL we would like to acknowledge the valuable assistance of Mr. William Scott in administration, organization, and logistic planning for the surveys. Also, Ms. Veena Naidu and Ms. Susan Wynn have been most helpful to the programdirectors. The continued support of many others at this Laboratory is gratefully acknowl- edged: in the Medical Department, Drs. D. C. Borg (Chairman), R. B. Aronson (Deputy Chairman), and others including Ors. H. L. Atkins, L. V. Hankes, R. D. Stoner, J. Iwai, ana P. Chandra and Mr. K. P. Mohring (Department Administrator). Among others at BNL, we are most grateful to Dr. V. P. Bond for his sup- port and advice and for the support and assistance of Dr. G. Vineyard, Director, and Messrs. N. P. Rathvon, K. E. Boehm, C. B. Meinhold, D. G. Clareus, and many others. We are particularly grateful to Dr. J. R. Naidu for his