Sierra, Juan Carlos; Universidad de Granada; Perla, Felipe; Universidad de Oriente; Gutiérrez-Quintanilla, Ricardo; Universidad Tecnológica de El Salvador
Useche, Bernardo; Universidad Autónoma de Bucaramanga
School of Health Sciences, Center of Biomedical Research; Medina, Gilda; Private Consultant; Ross, Michael W; University of Texas Health Science Center Houston; Markham, Christine; University of Texas Health Science Center Houston