Paralytic poliomyelitis in Romania, 1984-1992. Evidence for a high risk of vaccine-associated disease and reintroduction of wild-virus infection.
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M. Pallansch | P. Strebel | R. Sutter | S. Cochi | O. Kew | A. Aubert-Combiescu | M. Combiescu | P. Patriarca | N. Ion-Nedelcu | S. Biberi-Moroeanu | Manana Combiescu