Echocardiographic characteristics of patients with sickle cell anaemia in Sergipe, Brazil - Cipolotti, Rosana; Costa, G. B.; Lima, W. H. C.; Franco, R. P.; Mello, E. V.; Dal-Fabbro, Amaury Lelis; Gurgel, Ricardo Queiroz; Cuevas, L. E. (Journal of Tropical Pediatrics, 2001)