1. Departamento de Ciencias Biológicas; Universidad de los Andes; A.A. 4976; Bogotá; Colombia
2. El Valle Amphibian Conservation Center; El Valle de Anton; Coclé; Republic of Panama
3. Laboratories of Analytical Biology; Smithsonian Institution; Suitland; MD; 20746; USA
4. Smithsonian Tropical Research Institute; Apartado 0843-03092; Panama; Republic of Panama
5. Department of Conservation and Science, Houston Zoo; Houston; TX; 77030; USA