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1   II,     5.  5.Int(13)| available at: http://ftp.who.int/gb/archive/pdf_files/WHA55/
2   II,     5.  6.  6    |     Occup Med 36:90-94~Andersson GB (1999) Epidemiological features
3   II,     5.  8.  7    |       Weiss KB, Jensen RL, Marks GB, Gulsvik A, Nizankowska-Mogilnicka
4   II,     5. 14.  8    | Switzerland. [http://www.who.int/gb/e/e_wha60.html] (article
5  III,    10.  2.  1    |          at: [http://www.who.int/gb/e/e_wha60.html] (accessed
6  III,    10.  5.  3    |        2017) (http://www.who.int/gb/ebwha/pdf_files/WHA60/A60_