title: [Collagen diseases].
authors.forename: K
authors.initials: K
authors.lastname: Nagasawa
mesh_terms: D000818:Animals; D003095:Collagen Diseases / Q000150:complications*; D006801:Humans; D007239:Infections / Q000209:etiology*; D008180:Lupus Erythematosus, Systemic / Q000150:complications*; D009894:Opportunistic Infections