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1by Gunnbjornsdottir, M I, Omenaas, E, Gislason, T, Norrman, E, Olin, A C, Jõgi, R, Jensen, E J, Lindberg, E, Bjornsson, E, Franklin, K, Janson, C, Gulsvik, A, Laerum, B, Svanes, C, Torén, K, Tunsäter, A, Lillienberg, L, Gislason, D, Blondal, T, Bjornsdottir, U S, Jorundsdottir, K B, Talvik, R, Forsberg, B, Lundbäck, B, Söderberg, M, Ledin, M C, Boman, G, Norbäck, D, Wieslander, G, Spetz-Nyström, U, Cashelunge, K Stenudd, Rydén, E“..., Denmark, Sweden and Estonia, a postal questionnaire was sent to previous respondents. A total of 16,191...”
Published 2004
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2by Torén, K, Gislason, T, Omenaas, E, Jögi, R, Forsberg, B, Nyström, L, Olin, A-C, Svanes, C, Janson, C“...) in Sweden, Norway, Denmark, Iceland and Estonia was conducted in 1999-2001, in a population aged 30-54 yrs...”
Published in European Respiratory Journal (2007)
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3by Franklin, Karl A, Gislason, Thorarinn, Omenaas, Ernst, Jõgi, Rain, Jensen, Erik Juel, Lindberg, Eva, Gunnbjörnsdóttir, Maria, Nyström, Lennarth, Laerum, Birger N, Björnsson, Eythor, Torén, Kjell, Janson, Christer“... and women aged 25-54 years from Iceland, Estonia, Denmark, Norway, and Sweden answered a postal...”
Published in American Journal of Respiratory and Critical Care Medicine (2004)
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