0026-1742 0026-1742 S0026-17422017000400039 00 08 2017 00 08 2017 60 4 39 44 1 2010 18 34-50 2 2001 44 4 4 152-5 3 2009 4 2001 69 3 3 198-203 5 1979 59 1 1 83-92 6 2010 2 25 25 7 2007 21 84-91 8 2013 1 9