1 Department of Psychology, College of Charleston, Charleston, South Carolina, United States of America, 29424.
2 Food and Agriculture Organization, Dar es Salam, Tanzania & Department of Veterinary Tropical Diseases, University of Pretoria, South Africa, 0010.
3 Human Ecology, Centro de Investigación y de Estudios Avanzados (CINVESTAV), Mérida, México, 97133.
4 Department of Veterinary Medicine, University of Milan, Milan, Italy, 20122.
5 Loyola University Medical Center, Chicago, Illinois, United States of America, 60153.
6 Institute for Resource Information Science, College of Agriculture, Cornell University, Ithaca, United States of America, 14853.
7 Center for Global Health, Department of Internal Medicine, Medical School, University of New Mexico, Albuquerque, New Mexico, United States of America, 87131.