Hla class ii antigens in rheumatic fever: analysis of the dr locus by restriction fragment-length polymorphism and oligotyping - Wlidebach, W; Goldberg, A C K; Chiarella, J M; Guilherme, L; Snitcowsky, R; Pileggi, F; Kalil Filho, Jorge Elias (Human Immunology, 1994)