E. C. Chaves, “Risk factor in cerebrovascular disease — study with patients in ward of neurological clinic of ‘Hospital das Clínicas da Faculdade de Medicina da USP’ from 1977 to 1984”, Rev. Esc. Enferm. USP, vol. 23, no. 3, pp. 359–362, Dec. 1989, doi: 10.1590/0080-6234198902300300359.