Davis ea 1977
Davis L.E. et al. Chronic progressive poliomyelitis secondary to vaccination of an immunodeficient child.// Engl.J.Med. 1977;297:241-245.
Davis L.E. et al. Chronic progressive poliomyelitis secondary to vaccination of an immunodeficient child.// Engl.J.Med. 1977;297:241-245.
