title: Selective antibody deficiency and recurrent pneumococcal bacteremia in a patient with Sjögren's syndrome, hyperimmunoglobulinemia G, and deficiencies of IgG2 and IgG4.
mesh_terms: D002675:Child, Preschool; D005260:Female; D006801:Humans; D006942:Hypergammaglobulinemia / Q000150:complications*; D017099:IgG Deficiency; D007153:Immunologic Deficiency Syndromes / Q000150:complications*; D007223:Infant; D008297:Male; D008875:Middle Aged; D011008:Pneumococcal Infections / Q000209:etiology*; D012008:Recurrence; D018805:Sepsis / Q000209:etiology*; D012859:Sjogren's Syndrome / Q000150:complications*