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Spiegel A, Boutin JP, Cartel JL, Chanteau S, Cardines R, Saliou P, Roux JF.Spiegel A, et al.Trans R Soc Trop Med Hyg. 1991 Nov-Dec;85(6):783-7. doi: 10.1016/0035-9203(91)90454-7.Trans R Soc Trop Med Hyg. 1991.PMID: 1801354
Glaziou P, Chansin R, Spiegel A, Cartel JL.Glaziou P, et al. Among authors: spiegel a.Rev Mal Respir. 1991;8(4):387-90.Rev Mal Respir. 1991.PMID: 1924975French.