%0 Journal Article %T Elevated Serum IgG4 Levels in a Young Patient with Polyserositis and Necator americanus Infection %A Giuseppe D. Sanna %A Roberto Manetti %A Sergio Babudieri %A Valentina de Filippo %J Archive of "Case Reports in Immunology". %D 2018 %R 10.1155/2018/2974756 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5831313/