Impact of BAL in the manegement of pneumonia with treatment faillure: positivity of BAL culture under antibiotic therapy - Gomes, João Carlos Pereira; Pedreira Junior, Wilson Leite; Araujo, Evangelina da Motta Pacheco Alves de; Soriano, Francisco Garcia; Negri, Elnara Márcia; Antonangelo, Leila; Velasco, Irineu Tadeu (CHEST, 2000)