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Unpublished observations.
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This work was supported by a grant from the Creole Petroleum Corporation.
We are indebted to Mrs. Eliodora de Figueroa for her technical help, to Dr. Feliciano Acevedo for the gastrointestinal studies, and to Dr. Henrique Benaim Pinto for permissión to report Case 1.
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Roche, M., Perez-Gimenez, M.E., Layrisse, M. et al. Gastrointestinal bleeding in hookworm infection. Digest Dis Sci 2, 265–277 (1957). https://doi.org/10.1007/BF02231103
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DOI: https://doi.org/10.1007/BF02231103