1. Adams, W. H.: Case report from Navy Station Hospital, Saigon.
2. Eiseman, B.: Personal communication to the author.
3. Kelley, D.: Case report from Navy Station Hospital, Saigon.
4. Millar, J. W.: Personal communication to the author.
5. Preventive Medicine Division Report, Navy Department: U. S. Navy Medical News Letter.47: 17, 1966.