title: [Letter: HL-A antigens in rheumatoid arthritis and ankylosing spondylitis in Sardinia].
mesh_terms: D001172:Arthritis, Rheumatoid / Q000235:genetics / Q000276:immunology*; D005787:Gene Frequency; D006649:Histocompatibility Antigens / Q000032:analysis*; D006801:Humans; D007558:Italy; D008521:Mediterranean Islands; D013167:Spondylitis, Ankylosing / Q000235:genetics / Q000276:immunology*
chemical_list: D006649:Histocompatibility Antigens
vernacular_title: Lettre: Les antigènes HL-A dans la polyarthrite chronique rhumatismale et la spondylarthrite ankylosante en Sardaigne