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2. Snoring, asthma and sleep disturbance in Britain: a community based survey;Fitzpatrick, M.F.; Martin, K.; Fossa, E.; Shapiro, C.; Elton, R.A.; Douglas, N.J.;Eur Respir,1993
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4. Parasympathetic nervous system in nocturnal asthma;Morrison, J.F.; Pearson, S.B.; Dean, H.G.;BMJ,1988
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