1. Department of Biological Sciences, Texas Tech University, Lubbock, Texas 79409, USA
2. Instituto Conmemorativo Gorgas de Estudios en Salud, Rep. de Panamá
3. Museum of Southwestern Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA
4. Medical School, Department of Surgery, University of Minnesota, Minneapolis, Minnesota 55455, USA
5. Department of Biology, Portland State University, Portland, Oregon 97207, USA
6. Ministry of Health, Ancon, Rep. of Panama
7. Vice-Provost for Research, University of New Mexico, Albuquerque, New Mexico 87131, USA