Mitral valve thickening in acute rheumatic fever as a predictor of late valvar dysfunction - Silva, Telêmaco Luis da; Pazin Filho, Antônio; Romano, Minna Moreira Dias; Ferriani, Virgínia Paes Leme; Marin Neto, José Antonio; Maciel, Benedito Carlos; Schmidt, Andre (Plos one, 2021)