TY - GEN AU - SIVERTSON,S E AU - HYMAN,J B TI - [Smallpox; twenty-one cases in United Nations Personnel, Korea] SN - 0566-0777 PY - 2003///0501 KW - Humans KW - Republic of Korea KW - Smallpox KW - United Nations KW - Variola virus N1 - Publication Type: Journal Article ER -