title: Commentary on Dr. Alan P. Zelicoff's analysis (No. 6).
authors.affiliation: Hadron Corporation, USA.
authors.forename: Serguei
authors.initials: S
authors.lastname: Popov
mesh_terms: D001694:Biological Warfare / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D007623:Kazakhstan / Q000453:epidemiology; D012899:Smallpox / Q000453:epidemiology / Q000266:history*; D014586:USSR; D012901:Variola virus / Q000472:pathogenicity*