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Department of Psychiatry, Harvard Medical School, the Department of Social Relations, Harvard University, and the Department of Biostatistics, Harvard School of Public Health The work reported here was supported in part under Contract AF 33(038)20142 from the School of Aviation Medicine, Randolph Field, Texas; in part under a grant from the Supreme Council, 33rd Degree, Scottish Rite, Northern Masonic Jurisdiction, U.S.A., through the National Association for Mental Health; and in part by the U.S. Public Health Service, National Institutes of Health. We gratefully acknowledge the help given us by Harry C. Solomon, M.D., Robert W. White, Ph.D., Hugo Muenchj M.D., and Jane Worcester, D.P.H. Received June 11, 1953
Funkenstein et al. (Wed,) studied this question.