The SLAFES series started in Caracas, Venezuela, and over time the
symposia have taken place in 9 different Latin-American countries. The last five events occurred in
Mérida, Venezuela (2002), Havana, Cuba (2004), Puebla, Mexico, Puerto Iguazú Argentina (2008) and
Maragogi, Brazil (2011) . In its latest (20Th) edition in Maragogi, had about 200 participants from
12 countries. The program consisted of many plenary, invited and short talks in addition to posters
sessions. The 21th editions of SLAFES here in Colombia should have a similar format (including
parallel sessions) with its traditional wide scientific scope.