Morales, Fernando
Vásquez, Melissa
Cuenca, Patricia
Campos, Domingo
Santamaría, Carolina
del Valle, Gerardo
Brian, Roberto
Sittenfeld, Mauricio
Monckton, Darren G
Article History
Received: 13 November 2013
Revised: 2 June 2014
Accepted: 18 June 2014
First Online: 23 July 2014
Competing interests
: The authors declare no conflict of interest.