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Poliomyelitis Trends in Pondicherry, South India, 1989-91D. K. Srinivasa, A. Sahai, S. B. Rotti, M. B. Soudarssanane, M. Danabalan, R. N. Sahoo, K. A. Narayan, G. Ramalingam, S. Srinivasan, S. Mahadevan, B. V. Bhat and P. Nalini · Journal of Epidemiology and Community Health (1979-) · 1997