No evidence for prolonged excretion of polioviruses in persons with residual paralytic poliomyelitis in Ethiopia, Pakistan and Guatemala.
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S. Luby | J. Winkelstein | O. Kew | C. Chezzi | M. Agboatwalla | N. Halsey | A. Khan | E. Asturias | B. Beyene | O. Torres | H. Gebreselassie | T. Moatter | H. Asghar | R. Teklehaimanot