title: Recruitment begins for US smallpox vaccine trial.
authors.forename: F
authors.initials: F
authors.lastname: McLellan
mesh_terms: D000328:Adult; D006801:Humans; D018579:Patient Selection; D012899:Smallpox / Q000517:prevention & control*; D012900:Smallpox Vaccine; D014481:United States
chemical_list: D012900:Smallpox Vaccine