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Covas MJ, Pinto LA, Pereira Da Silva JA, Victorino RM.Covas MJ, et al.J Int Med Res. 1995 Nov-Dec;23(6):431-8. doi: 10.1177/030006059502300604.J Int Med Res. 1995.PMID: 8746610
Portugal I, Covas MJ, Brum L, Viveiros M, Ferrinho P, Moniz-Pereira J, David H.Portugal I, et al. Among authors: covas mj.Int J Tuberc Lung Dis. 1999 Mar;3(3):207-13.Int J Tuberc Lung Dis. 1999.PMID: 10094321