title: Compound heterozygosity for hemoglobin S and D: what do we need to know?
authors: Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), São José do Rio Preto, SP, Brazil. Electronic address: claudiabonini@sjrp.unesp.br.
authors: Claudia Regina
authors: CR
authors: Bonini-Domingos