title: Biological variation: back to basics.
authors.forename: Mario
authors.initials: M
authors.lastname: Plebani
authors.forename: Andrea
authors.initials: A
authors.lastname: Padoan
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Lippi
mesh_terms: D002624:Chemistry, Clinical; D019411:Clinical Laboratory Techniques; D016208:Databases, Factual; D006801:Humans; D008511:Medicine; D012016:Reference Values