[1] Natl Inst Arthritis & Musculoskeletal & Skin Dis, Mol Immunol & Inflammat Branch, Bethesda, MD 20892 USA
[2] Natl Human Genome Res Inst, Genet & Mol Biol Branch, NIH, Bethesda, MD USA
[3] Univ Brescia, Dept Pediat, Brescia, Italy
[4] Univ Frederico 2, Dept Pathol, Naples, Italy