An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Warren M, Collins WE, Richardson BB, Skinner JC.Warren M, et al.Am J Trop Med Hyg. 1977 Jul;26(4):607-11. doi: 10.4269/ajtmh.1977.26.607.Am J Trop Med Hyg. 1977.PMID: 329696
Warren M, Collins WE, Cedillos R, Jeffery GM.Warren M, et al.Am J Trop Med Hyg. 1976 Jan;25(1):20-5. doi: 10.4269/ajtmh.1976.25.20.Am J Trop Med Hyg. 1976.PMID: 769573
Warren M, Collins WE, Skinner JC, Larin AJ.Warren M, et al.Am J Trop Med Hyg. 1975 Sep;24(5):740-8. doi: 10.4269/ajtmh.1975.24.740.Am J Trop Med Hyg. 1975.PMID: 1190363
Warren M, Collins WE, Jeffery GM, Skinner JC.Warren M, et al.Am J Trop Med Hyg. 1975 Sep;24(5):749-54. doi: 10.4269/ajtmh.1975.24.749.Am J Trop Med Hyg. 1975.PMID: 1190364