Author(s)
                                Michael A. Lombardi,   Raul  Solis,   Harold  Sanchez,   J. Mauricio  Lopez-Romero,   Francisco  Jimenez,   Henry  Postigo,   Daniel  Perez,   Walter  Adad,   Victor  Masi,   Ahmed  Ibrahim,   Bill  Hoger,   Ricardo  de Carvalho,   Jose L. Kronenberg,   Gustavo C. Orozco,   Theodore  Reddock,   Leonardo  Trigo