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1986 36 152-65 1998 50 517-24 2003 18 153-8 2006 21 591-5 2006 2 37-9 2006 21 466-73 2010 30 21-6 2010 22 163-95 1996 625-6 2009 16 1-18 World Health Organization, Food and Agriculture Organization of the United Nations 2003 2003 19 823-5 2013 55 S161-9 2006 33 500-10 2010 37 418-26 1987 80 789-96 1999 1997 136-44 1996 55 139a 1999 18 23-7 2015 35 59-65