1 Luis Razetti School of Medicine, Universidad Central de Venezuela; Tropical Medicine Institute, Caracas, Venezuela. Electronic address: torresj@post.com.
2 Herbert Wertheim College of Medicine, Florida International University, Miami, Florida; Baptist Health System of South Florida.
3 Global Health Consortium, Florida International University, Miami, Florida; Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, Florida.