TY - GEN AU - SMORODINTSEV,A A TI - [In the laboratories of American specialists on poliomyelitis] SN - 0002-3027 PY - 2002///0501 KW - Humans KW - Laboratories KW - Poliomyelitis KW - prevention & control KW - Specialization KW - United States N1 - Publication Type: Journal Article ER -