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Leavell, Rita Dr, Sheffield M, Victoria.“Guidelines for the use of vitamin A in emergency and relief operations,”

International Journal of Epidemiology, Volume 17, Issue 4 (1988): 865–869. Print.

Katz, Joanne, M Tielsch, and L Zeger. “Village and Household Clustering of Xerophthalmia and Trachoma.”


World health forum 1987 ; 8(‎2)‎ : 204-207

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Ophthalmic Surgery 18:195-199, 1987.

Shingleton BJ, Distler JA, Baker BH. Filtration Surgery in Black Patients: Early Results in a West Indian Population.

International Ophthalmology, Volume 18(2) :133-135, 1987

Schwab L and Swartwood J. Portable Battery-Powered Indirect Ophthalmoscope for Field Surveys.


American Journal of Epidemiology, Volume 124, Issue 4 (1986): 561–568. Print.

Chirambo, C, Moses, Katz, Joanne, J Johnson, Schwab, Larry, Sommer, Alfred,Swartwood, Jack, M Tielsch, Tizazu, Teferra, P West Jr, and L Zeger. “Prevalence and Severity of Xerophthalmia in Southern Malawi.”