Hoyos-Giraldo, L S
Escobar-Hoyos, L F
Saavedra-Trujillo, D
Reyes-Carvajal, I
Muñoz, A
Londoño-Velasco, E
Tello, A
Cajas-Salazar, N
Ruíz, M
Carvajal, S
Santella, R M
Article History
Received: 23 December 2014
Revised: 25 February 2015
Accepted: 28 February 2015
First Online: 20 May 2015
Competing interests
: The authors declare no conflict of interest.