1. Department of Microbiology and Medical Zoology, University of Puerto Rico School of Medicine, Medical Sciences Campus , San Juan, Puerto Rico
2. Department of Obstetrics and Gynecology, University of Puerto Rico School of Medicine, Medical Sciences Campus , San Juan, Puerto Rico
3. University of Puerto Rico Comprehensive Cancer Center , San Juan, Puerto Rico
4. Department of Pediatrics, University of California San Diego , La Jolla, California, USA
5. Scripps Institution of Oceanography, University of California San Diego , La Jolla, California, USA
6. Department of Biological Sciences, University of Idaho , Moscow, Idaho, USA