1688-7026 1688-7026 S1688-70262020000300079 10.26864/pcs.v10.n3.6 Brazil Brazil Brazil 00 00 2020 00 00 2020 10 3 79 95

2016 45 109-33 2019 131-44 2017 1 1 561-9 2017 82 4 4 396-407 2011 17 313-36 2007 20 43-53 2015 24 49-62 2006 2006 43 1 1 76-86 1979 1948 2006 38 1 1 88-91 2017 1 43 43 17-32 2010 1985 1 175-94 R Development Core Team 2012 2018 6 1-19 2015 6 340-56 2014 39 221-36 2014 18 111-39 2017 46 2485-94 2013 6th ed. 2018 28 116-35 2014 3-27 2015 44 2273-85